All places
1,296 mysterious places across Britain and Ireland
By group
Circles & monuments86 placesUFO cases60 placesLost treasure51 placesPirates51 placesPlots51 placesLegends51 placesUnexplained51 placesBigfoot & Hominids51 placesHaunted places71 placesCrop circles51 placesTowers & follies51 placesCastles & abbeys58 placesWitches & witch trials51 placesLost & drowned villages51 placesShipwrecks52 placesHoly wells & springs51 placesBattlefields51 placesSecret bunkers & war sites51 placesHill figures & giants51 placesRoman Britain51 placesDragons & monsters51 placesGibbets & executions51 placesMysterious graves51 placesCaves & grottoes51 places
A to Z
- 50 Berkeley SquareHaunted place · Mayfair, London
- Abernethy Round TowerTower or folly · Abernethy, Perth and Kinross
- Ackling DykeRoman Britain · Cranborne Chase, Dorset
- Agatha Christie's DisappearanceUnexplained · Newlands Corner, near Guildford, Surrey
- Aillwee CaveCave or grotto · The Burren, County Clare
- Alfred's Castle PairCrop circle · Alfred's Castle, near Ashbury, Oxfordshire
- Alice and Gwendoline CaveBigfoot & Hominids · Edenvale, near Ennis, County Clare
- Alice MollandWitches · Exeter, Devon
- Alton Barnes White HorseHill figure · Milk Hill, Wiltshire
- Andrew Wilson and the Porteous RiotPirate · Pittenweem, Fife
- Anne BonnyPirate · Near Kinsale, County Cork
- Arbeia Roman FortRoman Britain · South Shields, Tyne and Wear
- Arbor LowAncient monument · Peak District, Derbyshire
- Ardmore Round TowerTower or folly · Ardmore, County Waterford
- Ardoch Roman FortRoman Britain · Braco, Perthshire
- ArichonanLost village · Near Bellanoch, Argyll
- Arthur's StoneLegend · Cefn Bryn, Gower
- Ashby St LedgersPlot · Near Daventry, Northamptonshire
- Athelhampton HouseHaunted place · Near Puddletown, Dorset
- AveburyAncient monument · Avebury, Wiltshire
- Avebury Avenue StarCrop circle · Between the West Kennet Avenue and the Ridgeway, Wiltshire
- Avebury Rings 2026Crop circle · By the henge near Green Street, Avebury, Wiltshire
- Aveline's HoleBigfoot & Hominids · Burrington Combe, Somerset
- Bacon HoleCave or grotto · Southgate, Gower
- BadbeaLost village · Near Berriedale, Caithness
- Badbury Rings PentagramCrop circle · Badbury Rings, near Shapwick, Dorset
- Baddesley ClintonPlot · Near Knowle, Warwickshire
- Ballygally CastleHaunted place · Ballygally, County Antrim
- Ballynoe Stone CircleAncient monument · Near Downpatrick, County Down
- Bamburgh CastleHaunted place · Bamburgh, Northumberland
- BannockburnBattlefield · Near Stirling
- Banwell Bone CavesBigfoot & Hominids · Banwell, Somerset
- Barbury Castle PiCrop circle · Near Wroughton, Wiltshire
- Bardsey IslandPirate · Off the Llŷn Peninsula, Gwynedd
- BarnhamBigfoot & Hominids · Near Thetford, Suffolk
- Barnton QuarrySecret site · Edinburgh
- Battle AbbeyCastle or abbey · Battle, East Sussex
- Battlefield, ShrewsburyBattlefield · Battlefield, Shropshire
- Bawdsey RadarSecret site · Bawdsey Manor, Suffolk
- Beaghmore Stone CirclesAncient monument · Near Cookstown, County Tyrone
- Beaumaris CastleCastle or abbey · Beaumaris, Anglesey
- Beaumaris GaolExecution site · Beaumaris, Anglesey
- Beckford's TowerTower or folly · Lansdown, Bath, Somerset
- Bedd BranwenMysterious grave · River Alaw, Anglesey
- Bedd TaliesinLegend · Near Tre Taliesin, Ceredigion
- Beer Quarry CavesCave or grotto · Beer, Devon
- Belgrave HallHaunted place · Leicester
- Bella in the Wych ElmUnexplained · Hagley Wood, Worcestershire
- BelnahuaLost village · Slate Islands, Argyll
- Ben BulbenLegend · County Sligo
- Bendigeidfran, the Giant KingHill figure · Harlech, Gwynedd
- Bentley PriorySecret site · Stanmore, London
- Berry Pomeroy CastleHaunted place · Near Totnes, Devon
- Berwyn MountainUFO case · Llandderfel, Gwynedd
- Bessie DunlopWitches · Lynn Glen, Dalry, Ayrshire
- Biddy EarlyWitches · Feakle, County Clare
- Bignor Roman VillaRoman Britain · Near Pulborough, West Sussex
- Birdoswald Roman FortRoman Britain · Hadrian's Wall, Cumbria
- Bisham AbbeyHaunted place · Near Marlow, Berkshire
- Black BartPirate · Little Newcastle, Pembrokeshire
- Black ShuckLegend · Blythburgh, Suffolk
- Blackbeard's BristolPirate · Llandoger Trow, King Street, Bristol
- Blackstone Edge Roman RoadRoman Britain · Near Littleborough, Greater Manchester
- Blarney CastleCastle or abbey · Blarney, County Cork
- Bledlow CrossHill figure · Bledlow, Buckinghamshire
- Bletchley ParkSecret site · Bletchley, Buckinghamshire
- Blick MeadAncient monument · Amesbury, Wiltshire
- Blickling HallHaunted place · Near Aylsham, Norfolk
- Blue Bell HillHaunted place · Near Chatham, Kent
- Blue John CavernCave or grotto · Castleton, Derbyshire
- Bodiam CastleCastle or abbey · Near Robertsbridge, East Sussex
- Bodmin JailHaunted place · Bodmin, Cornwall
- Bondip Hill CrossCrop circle · Near Ilchester, Somerset
- BonnybridgeUFO case · Near Falkirk, Stirlingshire
- Boreraig and SuisnishLost village · Isle of Skye
- Borley RectoryHaunted place · Borley, Essex
- Boscawen-UnAncient monument · Near St Buryan, Cornwall
- Boscombe DownUFO case · Near Amesbury, Wiltshire
- Bosworth FieldBattlefield · Near Market Bosworth, Leicestershire
- Boudicca's Grave?Mysterious grave · King's Cross Station, London
- Bouldnor CliffBigfoot & Hominids · Off Yarmouth, Isle of Wight
- Bowerman's NoseHill figure · Near Manaton, Dartmoor
- BownessieDragon or monster · Windermere, Cumbria
- Boxgrove ManBigfoot & Hominids · Boxgrove, West Sussex
- Brackla BunkerSecret site · Brackla Hill, Bridgend
- Brading Roman VillaRoman Britain · Brading, Isle of Wight
- Bramshill HouseHaunted place · Near Hook, Hampshire
- Brechin Round TowerTower or folly · Brechin, Angus
- Brecon GaerRoman Britain · Near Brecon, Powys
- Brenin LlwydBigfoot & Hominids · Pumlumon, Ceredigion
- Bridget ClearyWitches · Ballyvadlea, County Tipperary
- Britain's First Flying SaucerUFO case · RAF Tangmere, West Sussex
- Broad Haven SchoolUFO case · Broad Haven, Pembrokeshire
- Broad Hinton SpinnerCrop circle · Below Hackpen Hill, Wiltshire
- Broad Town White HorseHill figure · Near Wootton Bassett, Wiltshire
- Broadway TowerTower or folly · Broadway, Worcestershire
- Bryn Celli DduAncient monument · Llanddaniel Fab, Anglesey
- Burgh CastleRoman Britain · Near Great Yarmouth, Norfolk
- Burlington, the Secret Underground CitySecret site · Corsham, Wiltshire
- BurnswarkRoman Britain · Near Ecclefechan, Dumfries and Galloway
- Bury St Edmunds AbbeyCastle or abbey · Bury St Edmunds, Suffolk
- Bush BarrowAncient monument · Normanton Down, Wiltshire
- Cadair IdrisLegend · Near Dolgellau, Gwynedd
- Cadbury CastleLegend · South Cadbury, Somerset
- Caer GybiRoman Britain · Holyhead, Anglesey
- Caerlaverock CastleCastle or abbey · Near Dumfries
- Caerleon Roman FortressRoman Britain · Caerleon, Newport
- Caernarfon CastleCastle or abbey · Caernarfon, Gwynedd
- Caerphilly CastleCastle or abbey · Caerphilly
- CaerwentRoman Britain · Caerwent, Monmouthshire
- Cairnpapple HillAncient monument · Near Linlithgow, West Lothian
- Cake Wood HexagonCrop circle · Cake Wood, near Froxfield, Wiltshire
- Callanish StonesAncient monument · Isle of Lewis, Outer Hebrides
- Calliagh Berra's HouseHill figure · Slieve Gullion, County Armagh
- CalvineUFO case · Near Pitlochry, Perthshire
- CamulodunumRoman Britain · Colchester, Essex
- Cannock ChaseBigfoot & Hominids · Staffordshire
- Cantre'r GwaelodUnexplained · Borth, Ceredigion
- Capel CelynLost village · Llyn Celyn, Gwynedd
- Captain Henry MorganPirate · Llanrumney, Cardiff
- Captain KiddPirate · Execution Dock, Wapping, London
- Carmarthen Roman AmphitheatreRoman Britain · Carmarthen
- Carn BreaAncient monument · Above Redruth, Cornwall
- CarningliLegend · Above Newport, Pembrokeshire
- Carreg Cennen CastleCastle or abbey · Near Llandeilo, Carmarthenshire
- Carreg Coetan ArthurHill figure · Newport, Pembrokeshire
- Carrickfergus CastleCastle or abbey · Carrickfergus, County Antrim
- Castell Dinas BrânCastle or abbey · Llangollen, Denbighshire
- Castle ArchdaleSecret site · Lower Lough Erne, County Fermanagh
- Castle RushenExecution site · Castletown, Isle of Man
- CastleriggAncient monument · Near Keswick, Cumbria
- Castley Hill TwinsCrop circle · Near Somerton, Somerset
- Cathole CaveBigfoot & Hominids · Gower, Swansea
- Cato StreetPlot · Marylebone, London
- Caxton GibbetExecution site · Caxton, Cambridgeshire
- Cerne Abbas GiantLegend · Cerne Abbas, Dorset
- Chalice WellHoly well · Glastonbury, Somerset
- Chanctonbury RingLegend · South Downs, West Sussex
- Charles I's CoffinMysterious grave · St George's Chapel, Windsor
- Charles PeaceExecution site · Armley Gaol, Leeds
- Charleville CastleHaunted place · Tullamore, County Offaly
- Cheapside HoardLost treasure · Cheapside, London
- Cheddar ManBigfoot & Hominids · Gough's Cave, Somerset
- Chedworth Roman VillaRoman Britain · Near Cheltenham, Gloucestershire
- Cheesefoot HeadCrop circle · Near Winchester, Hampshire
- Chepstow CastleCastle or abbey · Chepstow, Monmouthshire
- Cherhill White HorseHill figure · Near Calne, Wiltshire
- Chester Roman AmphitheatreRoman Britain · Chester, Cheshire
- Chesters Roman FortRoman Britain · Hadrian's Wall, Northumberland
- Chew GreenRoman Britain · Cheviot Hills, Northumberland
- Chillingham CastleHaunted place · Chillingham, Northumberland
- Chingle HallHaunted place · Goosnargh, Lancashire
- Chislehurst CavesUnexplained · Chislehurst, London
- Churchill War RoomsSecret site · Westminster, London
- ChysausterAncient monument · Near Penzance, Cornwall
- CilmeriBattlefield · Cilmeri, Powys
- Cirencester Roman AmphitheatreRoman Britain · Cirencester, Gloucestershire
- Cissbury RingAncient monument · Near Worthing, West Sussex
- Clapham South Deep ShelterSecret site · Clapham, London
- Clapham WoodUFO case · Near Worthing, West Sussex
- Clare IslandPirate · Clew Bay, County Mayo
- Claude DuvalExecution site · Hounslow Heath, London
- Clava CairnsAncient monument · Near Inverness, Highlands
- Clavell TowerTower or folly · Kimmeridge, Dorset
- Clearwell CavesCave or grotto · Forest of Dean, Gloucestershire
- Cleeve AbbeyCastle or abbey · Washford, Somerset
- ClonmacnoiseCastle or abbey · County Offaly
- ClonminesLost village · County Wexford
- Clonycavan ManUnexplained · Clonycavan, County Meath
- Clophill Old ChurchHaunted place · Clophill, Bedfordshire
- Clytha CastleTower or folly · Near Abergavenny, Monmouthshire
- Cnoc CoigBigfoot & Hominids · Isle of Oronsay, Inner Hebrides
- Coire nan UruisgeanBigfoot & Hominids · Ben Venue, Loch Katrine
- Coldrum Long BarrowAncient monument · Trottiscliffe, Kent
- Coleshill and the Secret ArmySecret site · Coleshill, Oxfordshire
- Combe GibbetExecution site · Walbury Hill, near Inkpen, Berkshire
- Combe Hill SpiralCrop circle · Near Bratton, Wiltshire
- Conolly's FollyTower or folly · Near Maynooth, County Kildare
- Conwy CastleCastle or abbey · Conwy
- Corbridge LanxLost treasure · Corbridge, Northumberland
- Corbridge Roman TownRoman Britain · Corbridge, Northumberland
- Corfe CastleCastle or abbey · Isle of Purbeck, Dorset
- Cork City GaolExecution site · Sunday's Well, Cork
- CoteheleHaunted place · Near Saltash, Cornwall
- Coughton CourtPlot · Alcester, Warwickshire
- Coygan CaveBigfoot & Hominids · Near Laugharne, Carmarthenshire
- Crag CaveCave or grotto · Castleisland, County Kerry
- Crathes CastleHaunted place · Near Banchory, Aberdeenshire
- Creswell CragsBigfoot & Hominids · Near Worksop, Nottinghamshire
- Croagh PatrickLegend · Near Westport, County Mayo
- CrookhavenPirate · County Cork
- Cruel CoppingerPirate · Welcombe, on the Devon–Cornwall border
- Crumlin Road GaolExecution site · Belfast
- Cuddy's WellHoly well · Bellingham, Northumberland
- Cuerdale HoardLost treasure · Near Preston, Lancashire
- Culloden BattlefieldHaunted place · Near Inverness
- Cultybraggan CampSecret site · Comrie, Perthshire
- Culver HolePirate · Port Eynon, Gower
- Cunning MurrellWitches · Hadleigh, Essex
- Cuween HillAncient monument · Near Finstown, Orkney
- Cwm ElanLost village · Elan Valley, Powys
- CwmorthinLost village · Near Blaenau Ffestiniog, Gwynedd
- Cwmystwyth MinesLost village · Cwmystwyth, Ceredigion
- Cú Chulainn's StoneLegend · Clochafarmore, Knockbridge, County Louth
- Dame Alice KytelerWitches · Kilkenny
- Dan yr OgofCave or grotto · Brecon Beacons, Powys
- DaneburyAncient monument · Near Stockbridge, Hampshire
- Darwen Jubilee TowerTower or folly · Darwen Hill, Lancashire
- Dechmont WoodsUFO case · Livingston, West Lothian
- Derry Ormond TowerTower or folly · Near Lampeter, Ceredigion
- Derwent and AshoptonLost village · Ladybower Reservoir, Derbyshire
- Devenish Round TowerTower or folly · Devenish Island, Lower Lough Erne, County Fermanagh
- Devil's BridgeLegend · Pontarfynach, Ceredigion
- Devil's DykeHill figure · Near Brighton, West Sussex
- Devizes Millennium White HorseHill figure · Roundway Hill, Devizes, Wiltshire
- Dick Turpin's GraveExecution site · St George's Churchyard, York
- Dinas EmrysLegend · Beddgelert, Snowdonia
- Dirk Hatteraick's CavePirate · Near Creetown, Dumfries and Galloway
- Ditcheat WheelCrop circle · Near Pennard Hill, Somerset
- Dolaucothi Gold MinesRoman Britain · Pumsaint, Carmarthenshire
- Dolbadarn CastleCastle or abbey · Llanberis, Gwynedd
- Doolin CaveCave or grotto · Doolin, County Clare
- Doon WellHoly well · Near Kilmacrennan, County Donegal
- Dorchester Roman Town HouseRoman Britain · Dorchester, Dorset
- DounreaySecret site · Near Thurso, Caithness
- Dover CastleHaunted place · Dover, Kent
- Dozmary PoolLegend · Bodmin Moor, Cornwall
- Dr Pritchard, the PoisonerExecution site · Jail Square, Glasgow
- Dr William PriceMysterious grave · Llantrisant, Rhondda Cynon Taf
- Dragon HillDragon or monster · Uffington, Oxfordshire
- Drake's DrumPirate · Buckland Abbey, Devon
- Drakelow TunnelsSecret site · Near Kidderminster, Worcestershire
- Drombeg Stone CircleAncient monument · Near Glandore, County Cork
- DrumanaghRoman Britain · Near Loughshinny, County Dublin
- Duddo Five StonesAncient monument · Near Berwick, Northumberland
- DunaddLegend · Kilmartin Glen, Argyll
- DunchurchPlot · Near Rugby, Warwickshire
- Dunluce CastleCastle or abbey · Near Bushmills, County Antrim
- Dunluce TownLost village · Dunluce, County Antrim
- Dunmore CaveCave or grotto · Near Kilkenny
- Dunnottar CastleCastle or abbey · Near Stonehaven, Aberdeenshire
- Dunstanburgh CastleCastle or abbey · Near Craster, Northumberland
- DunwichUnexplained · Suffolk coast
- Dupath WellHoly well · Near Callington, Cornwall
- Durrington WallsAncient monument · Near Amesbury, Wiltshire
- Dylan Thomas's GraveMysterious grave · St Martin's churchyard, Laugharne
- East Field, Alton BarnesCrop circle · Vale of Pewsey, Wiltshire
- Eccles-on-SeaLost village · Norfolk coast
- EdgehillBattlefield · Near Kineton, Warwickshire
- Eildon HillsLegend · Melrose, Scottish Borders
- El Gran GrifónShipwreck · Fair Isle, Shetland
- Elgin CathedralCastle or abbey · Elgin, Moray
- Epworth RectoryHaunted place · Epworth, Lincolnshire
- Etchilhampton Wildflower CircleCrop circle · Etchilhampton Hill, near Devizes, Wiltshire
- Eugene AramExecution site · Knaresborough, North Yorkshire
- Eustace the MonkPirate · Off Sandwich, Kent
- EveshamBattlefield · Evesham, Worcestershire
- Execution DockExecution site · Wapping, London
- EyamLost village · Peak District, Derbyshire
- Fan Bay Deep ShelterSecret site · White Cliffs of Dover, Kent
- Faringdon FollyTower or folly · Faringdon, Oxfordshire
- Farleigh Hungerford CastleCastle or abbey · Near Trowbridge, Somerset
- Ferriter's CoveBigfoot & Hominids · Dingle Peninsula, County Kerry
- Ffynnon BeunoHoly well · Clynnog Fawr, Gwynedd
- Ffynnon DdyfnogHoly well · Llanrhaeadr, Denbighshire
- Ffynnon ElianHoly well · Llanelian-yn-Rhos, Conwy
- Ffynnon Fair, PenrhysHoly well · Penrhys, Rhondda
- Ffynnon GwenfaenHoly well · Rhoscolyn, Anglesey
- Ffynnon GybiHoly well · Llangybi, Gwynedd
- Fingal's CaveLegend · Isle of Staffa, Inner Hebrides
- Finn McCool's FingersHill figure · Shantemon, County Cavan
- Fishbourne Roman PalaceRoman Britain · Near Chichester, West Sussex
- Fishpool HoardLost treasure · Near Ravenshead, Nottinghamshire
- Flag FenAncient monument · Near Peterborough, Cambridgeshire
- Flannan Isles LighthouseUnexplained · Outer Hebrides
- Flat HolmSecret site · Bristol Channel, off Cardiff
- FloddenBattlefield · Branxton, Northumberland
- Flora MacDonald's GraveMysterious grave · Kilmuir, Isle of Skye
- Florence Newton, the Witch of YoughalWitches · Youghal, County Cork
- Folkestone White HorseHill figure · Cheriton Hill, Folkestone, Kent
- Formby FootprintsBigfoot & Hominids · Formby Point, Merseyside
- Fort DunreeSecret site · Lough Swilly, County Donegal
- Fort Southwick and the D-Day TunnelsSecret site · Portsdown Hill, Hampshire
- FotheringhayExecution site · Fotheringhay, Northamptonshire
- Fountains AbbeyCastle or abbey · Near Ripon, North Yorkshire
- Fox Hill PictogramCrop circle · Near Liddington, Wiltshire
- Freston TowerTower or folly · Near Ipswich, Suffolk
- Frome HoardLost treasure · Near Frome, Somerset
- Fyvie CastleHaunted place · Turriff, Aberdeenshire
- Gad's Hill and Swift NickExecution site · Higham, near Rochester, Kent
- GainsthorpeLost village · Near Hibaldstow, Lincolnshire
- Gallagh ManBigfoot & Hominids · Near Castleblakeney, County Galway
- Gallarus OratoryUnexplained · Dingle Peninsula, County Kerry
- Galloway HoardLost treasure · Near Kirkcudbright, Galloway
- Gaping GillCave or grotto · Ingleborough, North Yorkshire
- Gef the Talking MongooseUnexplained · Dalby, Isle of Man
- Gelert's GraveLegend · Beddgelert, Snowdonia
- Giant BolsterHill figure · St Agnes, Cornwall
- Gibbet HillExecution site · Hindhead, Surrey
- Gilmerton CoveCave or grotto · Gilmerton, Edinburgh
- Glamis CastleHaunted place · Glamis, Angus
- Glastonbury AbbeyCastle or abbey · Glastonbury, Somerset
- Glastonbury Lake VillageAncient monument · Godney, Somerset
- Glastonbury TorLegend · Glastonbury, Somerset
- GlendaloughCastle or abbey · Wicklow Mountains
- GlenfinnanPlot · Glenfinnan, Lochaber
- Glyndŵr's Parliament HousePlot · Machynlleth, Powys
- Gog and MagogHill figure · Guildhall, City of London
- Gola IslandLost village · Off County Donegal
- Goldcliff FootprintsBigfoot & Hominids · Severn Estuary, Newport
- Goodrich CastleCastle or abbey · Near Ross-on-Wye, Herefordshire
- Goodwin SandsUnexplained · Off Deal, Kent
- Gors FawrAncient monument · Mynachlog-ddu, Pembrokeshire
- Gowrie HousePlot · Perth
- Grace Neill'sHaunted place · Donaghadee, County Down
- Grace O'Malley, the Pirate QueenPirate · Rockfleet Castle, County Mayo
- Great Orme Copper MinesAncient monument · Llandudno, Conwy
- Great Wishford TripleCrop circle · Near Grovely Wood, Great Wishford, Wiltshire
- Greenham CommonSecret site · Near Newbury, Berkshire
- Grey WethersAncient monument · Near Postbridge, Dartmoor
- Greyfriars BobbyMysterious grave · Greyfriars Kirkyard, Edinburgh
- Greyfriars KirkyardHaunted place · Old Town, Edinburgh
- Grimes GravesAncient monument · Near Brandon, Norfolk
- GrimspoundAncient monument · Dartmoor, Devon
- Gristhorpe ManAncient monument · Gristhorpe, North Yorkshire
- Gruinard IslandSecret site · Gruinard Bay, Wester Ross
- Gwen ferch EllisWitches · Denbigh, Denbighshire
- Gwydir CastleHaunted place · Llanrwst, Conwy
- Hack Green Secret Nuclear BunkerSecret site · Near Nantwich, Cheshire
- Hackpen HillCrop circle · Near Broad Hinton, Wiltshire
- Hackpen White HorseHill figure · Hackpen Hill, Wiltshire
- Hadlow TowerTower or folly · Hadlow, Kent
- Haldon BelvedereTower or folly · Near Exeter, Devon
- HallsandsLost village · Start Bay, Devon
- Ham HouseHaunted place · Richmond, London
- Hambledon HillAncient monument · Child Okeford, Dorset
- Hampton Court PalaceHaunted place · East Molesey, Surrey
- Hampton GayLost village · Near Kidlington, Oxfordshire
- Hampton-on-SeaLost village · Near Herne Bay, Kent
- Happisburgh FootprintsBigfoot & Hominids · Happisburgh, Norfolk
- Hardknott Roman FortRoman Britain · Hardknott Pass, Cumbria
- Harlech CastleCastle or abbey · Harlech, Gwynedd
- Harraby HillExecution site · Carlisle, Cumbria
- Harry PayePirate · Poole, Dorset
- Hawkstone Park GrottoCave or grotto · Weston-under-Redcastle, Shropshire
- Helen DuncanWitches · Portsmouth, Hampshire
- Hellfire CavesHaunted place · West Wycombe, Buckinghamshire
- Hengistbury HeadAncient monument · Bournemouth, Dorset
- Henry EveryPirate · Newton Ferrers, Devon
- Herne the HunterLegend · Windsor Great Park, Berkshire
- High CrossRoman Britain · Near Lutterworth, Leicestershire
- Hill o' Many StanesAncient monument · Near Lybster, Caithness
- Hindlip HallPlot · Near Worcester
- Hinton AmpnerHaunted place · Near Alresford, Hampshire
- HMS AnsonShipwreck · Loe Bar, near Porthleven, Cornwall
- HMS ConwayShipwreck · Menai Strait, Anglesey
- HMS EurydiceShipwreck · Off Dunnose, Isle of Wight
- HMS Formidable and the Real LassieShipwreck · Lyme Bay, off Dorset
- HMS HampshireShipwreck · Off Marwick Head, Orkney
- HMS LondonShipwreck · Thames Estuary, off Southend, Essex
- HMS MontaguShipwreck · Shutter Rock, Lundy
- HMS NatalShipwreck · Cromarty Firth, Ross-shire
- HMS Royal GeorgeShipwreck · Spithead, off Portsmouth, Hampshire
- HMS Royal OakShipwreck · Scapa Flow, Orkney
- HMS SaldanhaShipwreck · Lough Swilly, County Donegal
- HMS ThetisShipwreck · Liverpool Bay
- HMS VanguardShipwreck · Scapa Flow, Orkney
- HMY IolaireShipwreck · Beasts of Holm, Stornoway, Isle of Lewis
- Hob HoleBigfoot & Hominids · Runswick Bay, North Yorkshire
- Hod HillRoman Britain · Near Blandford, Dorset
- Holbeche HousePlot · Near Kingswinford, Staffordshire
- Holiburn, the Giant of Carn GalverHill figure · Carn Galver, near Morvah, Cornwall
- Holy LochSecret site · Sandbank, near Dunoon, Argyll
- Hook LighthouseTower or folly · Hook Head, County Wexford
- Horton TowerTower or folly · Horton, Dorset
- Hound Tor Medieval VillageLost village · Dartmoor, Devon
- Housesteads Roman FortRoman Britain · Hadrian's Wall, Northumberland
- Howard House (Charterhouse)Plot · Clerkenwell, London
- Howell DavisPirate · Milford Haven, Pembrokeshire
- Howick HouseAncient monument · Howick, Northumberland
- Hoxne HoardLost treasure · Hoxne, Suffolk
- Hoyle's MouthBigfoot & Hominids · Near Tenby, Pembrokeshire
- Huddington CourtPlot · Near Droitwich, Worcestershire
- Ilchester GaolExecution site · Ilchester, Somerset
- Illiam DhonePlot · Hango Hill, Castletown, Isle of Man
- ImberLost village · Salisbury Plain, Wiltshire
- InchkeithSecret site · Firth of Forth
- InchtuthilRoman Britain · Near Caputh, Perthshire
- InisharkLost village · Off County Galway
- InishmurrayLost village · Off County Sligo
- Inveraray JailExecution site · Inveraray, Argyll
- Iona AbbeyCastle or abbey · Isle of Iona, Argyll
- Isaac GulliverPirate · Kinson, Dorset
- Island Farm, Camp 198Secret site · Bridgend
- Isle MareeHoly well · Loch Maree, Wester Ross
- Isobel GowdieWitches · Auldearn, Nairnshire
- Jack Cade's RebellionPlot · Cade Street, near Heathfield, East Sussex
- Jack o' LegsHill figure · Weston, Hertfordshire
- Jack RattenburyPirate · Beer, Devon
- Jack the RipperUnexplained · Whitechapel, London
- Jack the Treacle EaterTower or folly · Barwick, near Yeovil, Somerset
- Jack's Plantation StarCrop circle · Below King Alfred's Tower, near Bruton, Somerset
- Jamaica InnPirate · Bolventor, Bodmin Moor
- Jane Wenham, the Wise Woman of WalkernWitches · Walkern, Hertfordshire
- Janet HorneWitches · Dornoch, Sutherland
- JarlshofAncient monument · Sumburgh, Shetland
- Jay's GraveUnexplained · Near Hound Tor, Dartmoor, Devon
- Jedburgh AbbeyCastle or abbey · Jedburgh, Scottish Borders
- Jedburgh Castle JailExecution site · Jedburgh, Scottish Borders
- Jeremy Bentham's Auto-IconMysterious grave · University College London
- Joan Wytte, the Fighting Fairy WomanWitches · Bodmin, Cornwall
- John Andrew, King of the SmugglersPirate · Saltburn-by-the-Sea, North Yorkshire
- John CallicePirate · Tenby, Pembrokeshire
- John GowPirate · Calf of Eday, Orkney
- John Harries, the Cunning ManWitches · Cwrt-y-Cadno, Carmarthenshire
- John Hawley of DartmouthPirate · Dartmouth, Devon
- John NuttPirate · Torbay, Devon
- John Paul Jones' RaidPirate · Whitehaven, Cumbria
- John WardPirate · Faversham, Kent
- Jonathan Swift's GraveMysterious grave · St Patrick's Cathedral, Dublin
- Judge Jeffreys and Martha BrownExecution site · Dorchester, Dorset
- Kate McNivenWitches · Knock of Crieff, Perthshire
- Kelvedon Hatch Secret Nuclear BunkerSecret site · Near Brentwood, Essex
- Kendrick's CaveBigfoot & Hominids · Great Orme, Llandudno
- KenfigLost village · Near Porthcawl, Bridgend
- Kenilworth CastleCastle or abbey · Kenilworth, Warwickshire
- Kents CavernBigfoot & Hominids · Torquay, Devon
- Kett's RebellionPlot · Kett's Heights, Norwich
- Kevin BarryExecution site · Mountjoy Prison, Dublin
- Kidwelly CastleCastle or abbey · Kidwelly, Carmarthenshire
- Kilburn White HorseHill figure · Near Thirsk, North Yorkshire
- KilliecrankieBattlefield · Pass of Killiecrankie, Perthshire
- Kilmacduagh Round TowerTower or folly · Near Gort, County Galway
- Kilmainham GaolExecution site · Dublin
- Kilmartin GlenAncient monument · Kilmartin, Argyll
- King Alfred's Lost BonesMysterious grave · Hyde Abbey, Winchester, Hampshire
- King Alfred's TowerTower or folly · Stourhead, on the Somerset–Wiltshire border
- King Arthur's CaveCave or grotto · Near Symonds Yat, Herefordshire
- King Harold's GraveMysterious grave · Waltham Abbey, Essex
- King John's TreasureLost treasure · The Wash, Lincolnshire
- King Orry's GraveMysterious grave · Laxey, Isle of Man
- King Stephen's Lost GraveMysterious grave · Faversham, Kent
- King's CaveCave or grotto · Isle of Arran
- Kingsand and CawsandPirate · Rame Peninsula, Cornwall
- Kingsdon FlowerCrop circle · Bondip Hill, Kingsdon, Somerset
- Kingweston Solstice CircleCrop circle · Near Kingweston House, Somerset
- Kingweston SpinnerCrop circle · Near Snap Hill, Kingweston, Somerset
- Kinloch, Isle of RumBigfoot & Hominids · Kinloch, Rum
- Kinver Edge Rock HousesCave or grotto · Kinver, Staffordshire
- Kirk o' FieldPlot · Old College, Edinburgh
- Kirkdale CaveCave or grotto · Near Kirkbymoorside, North Yorkshire
- Kit's Coty HouseAncient monument · Aylesford, Kent
- Knap of HowarAncient monument · Papa Westray, Orkney
- KnockmanyHill figure · Near Augher, County Tyrone
- KnocknareaLegend · Near Sligo
- Knowlton ChurchAncient monument · Near Wimborne, Dorset
- Kylemore AbbeyCastle or abbey · Connemara, County Galway
- La Trinidad ValenceraShipwreck · Kinnagoe Bay, County Donegal
- Lady Betty, the HangwomanExecution site · Roscommon
- Lady GodivaLegend · Coventry, West Midlands
- Lady Janet Douglas of GlamisWitches · Glamis Castle, Angus
- Lakenheath–BentwatersUFO case · RAF Lakenheath, Suffolk
- Lambert Simnel and Stoke FieldPlot · East Stoke, Nottinghamshire
- Lancaster CastleHaunted place · Lancaster
- Lanyon QuoitAncient monument · Near Morvah, Cornwall
- Laurence Sterne's GraveMysterious grave · Coxwold, North Yorkshire
- Lawrence of Arabia's GraveMysterious grave · Moreton, Dorset
- Lay Wood SerpentCrop circle · Lay Wood, near Devizes, Wiltshire
- Leap CastleHaunted place · Near Roscrea, County Offaly
- Leith Hill TowerTower or folly · Near Dorking, Surrey
- LetocetumRoman Britain · Wall, near Lichfield, Staffordshire
- Lig-na-PaisteDragon or monster · Owenreagh valley, County Tyrone
- Lilias AdieWitches · Torryburn, Fife
- Lincoln CastleExecution site · Lincoln
- Lindisfarne PrioryCastle or abbey · Holy Island, Northumberland
- Lindow ManAncient monument · Lindow Moss, Cheshire
- Litlington White HorseHill figure · Near Alfriston, East Sussex
- Little John's GraveMysterious grave · Hathersage, Derbyshire
- Littlecote HouseHaunted place · Near Hungerford, Wiltshire
- Llancaiach Fawr ManorHaunted place · Near Caerphilly, Wales
- Llangrannog Smugglers' CovesPirate · Llangrannog, Ceredigion
- LlanwddynLost village · Lake Vyrnwy, Powys
- Llech IdrisHill figure · Near Trawsfynydd, Gwynedd
- Llechwedd Slate CavernsCave or grotto · Blaenau Ffestiniog, Gwynedd
- Llyn Cerrig BachAncient monument · RAF Valley, Anglesey
- Llyn LlydawLegend · Snowdon, Gwynedd
- Loch Ewe and the Arctic ConvoysSecret site · Aultbea, Wester Ross
- Loch NessLegend · Highlands, Scotland
- Loftus HallHaunted place · Hook Peninsula, County Wexford
- Long Meg and Her DaughtersAncient monument · Little Salkeld, Cumbria
- Lord Byron's GraveMysterious grave · Hucknall, Nottinghamshire
- Lord Hill's ColumnTower or folly · Shrewsbury, Shropshire
- Lough BooraBigfoot & Hominids · Near Kilcormac, County Offaly
- Lough GurUnexplained · County Limerick
- Lough NeaghLegend · Northern Ireland
- Lud's ChurchCave or grotto · Near Gradbach, Staffordshire
- Ludwell Triple GoddessCrop circle · Near Win Green, Wiltshire
- Lullingstone Roman VillaRoman Britain · Eynsford, Kent
- Lundy IslandPirate · Bristol Channel, Devon
- Lynch's WindowExecution site · Market Street, Galway
- Lynford QuarryBigfoot & Hominids · Near Thetford, Norfolk
- LyonesseLegend · Land's End, Cornwall
- Macbeth's HillockWitches · Near Brodie, Moray
- Machrie MoorAncient monument · Isle of Arran
- MacKinnon's CaveCave or grotto · Gribun, Isle of Mull
- Mad Jack Fuller's PyramidMysterious grave · Brightling, East Sussex
- Madron WellHoly well · Near Penzance, Cornwall
- Maen HuailHill figure · St Peter's Square, Ruthin, Denbighshire
- MaeshoweAncient monument · Stenness, Orkney
- Maggie Wall's MonumentWitches · Near Dunning, Perthshire
- Maiden CastleAncient monument · Near Dorchester, Dorset
- Major Thomas WeirWitches · West Bow, Edinburgh
- MaldonBattlefield · Near Maldon, Essex
- Malmesbury AbbeyCastle or abbey · Malmesbury, Wiltshire
- Mam TorAncient monument · Castleton, Derbyshire
- ManningtreeWitches · Essex
- Manod QuarrySecret site · Near Blaenau Ffestiniog, Gwynedd
- Marble Arch CavesCave or grotto · Near Enniskillen, County Fermanagh
- Mardale GreenLost village · Haweswater, Cumbria
- Marden HengeAncient monument · Vale of Pewsey, Wiltshire
- Marlborough White HorseHill figure · Preshute, Marlborough, Wiltshire
- Marston MoorBattlefield · Near Long Marston, North Yorkshire
- Martin's StaneDragon or monster · Near Bridgefoot, Strathmartine, Angus
- Mary Ann CottonExecution site · Durham Gaol, Durham
- Mary Bateman, the Yorkshire WitchWitches · Leeds, West Yorkshire
- Mary Butters, the Carnmoney WitchWitches · Carnmoney, County Antrim
- Mary King's CloseHaunted place · Royal Mile, Edinburgh
- Mary LakelandWitches · Ipswich, Suffolk
- Mary TimneyExecution site · Dumfries
- McCaig's TowerTower or folly · Oban, Argyll
- Meg Shelton's GraveWitches · Woodplumpton, Lancashire
- Melrose AbbeyCastle or abbey · Melrose, Scottish Borders
- Merlin's CaveCave or grotto · Tintagel, Cornwall
- Merlin's OakLegend · Carmarthen
- Mermaid's PoolDragon or monster · Kinder Scout, Derbyshire
- Middleham CastleCastle or abbey · Middleham, North Yorkshire
- Mildenhall TreasureLost treasure · West Row, Suffolk
- Milk Hill 2026Crop circle · Milk Hill, above Alton Barnes, Wiltshire
- Milk Hill GalaxyCrop circle · Alton Barnes, Wiltshire
- MingulayLost village · Barra Isles, Outer Hebrides
- Mitchell's FoldAncient monument · Corndon Hill, Shropshire
- Mitchelstown CaveCave or grotto · Near Cahir, County Tipperary
- Moigne DownsUFO case · Near Owermoigne, Dorset
- Molly Leigh's GraveWitches · St John's Church, Burslem, Staffordshire
- Monmouth's LandingPlot · Lyme Regis, Dorset
- Mons GraupiusBattlefield · Bennachie, Aberdeenshire
- MoonfleetPirate · Fleet, near Weymouth, Dorset
- Morag of Loch MorarDragon or monster · Loch Morar, Highlands
- Morgawr the Sea SerpentUnexplained · Falmouth Bay, Cornwall
- Mormond Hill White HorseHill figure · Near Fraserburgh, Aberdeenshire
- Mortimer's CrossBattlefield · Near Leominster, Herefordshire
- Mother Ludlam's CaveWitches · Near Farnham, Surrey
- Mother Shipton's CaveUnexplained · Knaresborough, North Yorkshire
- Mount SandelBigfoot & Hominids · Near Coleraine, County Londonderry
- Mow Cop CastleTower or folly · Mow Cop, Staffordshire–Cheshire border
- Muchelney AbbeyCastle or abbey · Near Langport, Somerset
- Muncaster CastleHaunted place · Ravenglass, Cumbria
- Munlochy Clootie WellHoly well · Black Isle, Ross-shire
- Museum of Witchcraft and MagicWitches · Boscastle, Cornwall
- Must FarmAncient monument · Whittlesey, Cambridgeshire
- Mên-an-TolAncient monument · Near Morvah, Cornwall
- Nanna's CaveBigfoot & Hominids · Caldey Island, Pembrokeshire
- Nant GwrtheyrnLost village · Llŷn Peninsula, Gwynedd
- NasebyBattlefield · Naseby, Northamptonshire
- National Justice MuseumHaunted place · Shire Hall, Nottingham
- Navan FortLegend · Emain Macha, County Armagh
- Netley AbbeyCastle or abbey · Netley, Hampshire
- Newchurch-in-PendleWitches · Pendle, Lancashire
- Newgate PrisonExecution site · Old Bailey, City of London
- Newport ArchRoman Britain · Lincoln
- Newstead AbbeyHaunted place · Ravenshead, Nottinghamshire
- Nine LadiesAncient monument · Stanton Moor, Derbyshire
- Normanton Down SquareCrop circle · Near Normanton Down Barrows, Stonehenge, Wiltshire
- Norton Bavant Flower of LifeCrop circle · Norton Plantation, near Norton Bavant, Wiltshire
- Nunney CastleCastle or abbey · Nunney, near Frome, Somerset
- O'Connell's TowerMysterious grave · Glasnevin Cemetery, Dublin
- Ogof Ffynnon DduCave or grotto · Penwyllt, Powys
- Old Croghan ManBigfoot & Hominids · Croghan Hill, County Offaly
- Old JohnTower or folly · Bradgate Park, Leicestershire
- Old SarumCastle or abbey · Near Salisbury, Wiltshire
- Old Wardour CastleCastle or abbey · Near Tisbury, Wiltshire
- Old WinchelseaLost village · Off Rye, East Sussex
- Oliver Cromwell's HeadMysterious grave · Sidney Sussex College, Cambridge
- Oliver's CastleCrop circle · Roundway Down, near Devizes, Wiltshire
- Ordsall HallHaunted place · Salford, Greater Manchester
- Orford NessSecret site · Near Orford, Suffolk
- Osmington White HorseHill figure · Near Weymouth, Dorset
- Ossian's StoneHill figure · The Sma' Glen, Perthshire
- Owain Glyndŵr's CaveCave or grotto · Moel Hebog, Gwynedd
- Oweynagat, the Cave of the CatsCave or grotto · Rathcroghan, County Roscommon
- OwthorneLost village · Near Withernsea, East Yorkshire
- PaddockSecret site · Dollis Hill, London
- PakefieldBigfoot & Hominids · Near Lowestoft, Suffolk
- Paxton's TowerTower or folly · Llanarthne, Carmarthenshire
- Peak CavernCave or grotto · Castleton, Derbyshire
- Peg PowlerDragon or monster · River Tees, Piercebridge
- Pembroke CastleCastle or abbey · Pembroke, Pembrokeshire
- Pendle HillLegend · Near Clitheroe, Lancashire
- Pengersick CastleHaunted place · Praa Sands, Cornwall
- PennardLost village · Gower, Swansea
- Pentre IfanAncient monument · Nevern, Pembrokeshire
- Perkin WarbeckPlot · Whitesand Bay, Cornwall
- Perrott's FollyTower or folly · Edgbaston, Birmingham
- Peterson's TowerTower or folly · Sway, Hampshire
- Pevensey CastleCastle or abbey · Pevensey, East Sussex
- Pewsey White HorseHill figure · Pewsey Hill, Wiltshire
- Plas TegHaunted place · Near Mold, Flintshire
- PluckleyHaunted place · Near Ashford, Kent
- PolperroPirate · South-east Cornwall
- Pontefract CastleCastle or abbey · Pontefract, West Yorkshire
- Pontnewydd CaveBigfoot & Hominids · Elwy Valley, Denbighshire
- Poole's CavernCave or grotto · Buxton, Derbyshire
- Portchester CastleRoman Britain · Portchester, Hampshire
- Porth yr OgofCave or grotto · Near Ystradfellte, Powys
- Porton DownSecret site · Near Salisbury, Wiltshire
- PrestonpansBattlefield · East Lothian
- Primrose HillPlot · Camden, London
- Prince Charlie's CaveCave or grotto · Elgol, Isle of Skye
- Prince MadocUnexplained · Rhos-on-Sea, Conwy
- Prussia CovePirate · Near Marazion, Cornwall
- Racton MonumentTower or folly · Near Chichester, West Sussex
- RAF Air Defence Radar MuseumSecret site · Neatishead, Norfolk
- RAF FylingdalesSecret site · North York Moors, North Yorkshire
- RAF HolmptonSecret site · Near Withernsea, East Yorkshire
- RAF Saxa VordSecret site · Unst, Shetland
- RAF Spadeadam and Blue StreakSecret site · Near Gilsland, Cumbria
- RAF TopcliffeUFO case · Near Thirsk, North Yorkshire
- RAF Upper HeyfordSecret site · Upper Heyford, Oxfordshire
- RAF West FreughUFO case · Near Stranraer, Wigtownshire
- Raglan CastleCastle or abbey · Raglan, Monmouthshire
- Raitts CaveCave or grotto · Near Kingussie, Badenoch
- Ramsgate TunnelsSecret site · Ramsgate, Kent
- Ravenser OddLost village · Spurn Point, East Yorkshire
- Raynham HallHaunted place · Near Fakenham, Norfolk
- Reading AbbeyCastle or abbey · Reading, Berkshire
- ReculverLost village · Near Herne Bay, Kent
- Rendlesham ForestUFO case · Near Woodbridge, Suffolk
- Restormel CastleCastle or abbey · Near Lostwithiel, Cornwall
- Rhitta Gawr's GraveLegend · Yr Wyddfa (Snowdon), Gwynedd
- Rhossili's Buried ChurchLost village · Rhossili, Gower
- RibchesterRoman Britain · Ribchester, Lancashire
- Richard III's Car Park GraveMysterious grave · Leicester
- Richborough Roman FortRoman Britain · Near Sandwich, Kent
- Rievaulx AbbeyCastle or abbey · Near Helmsley, North Yorkshire
- Rillaton CupLost treasure · Near Minions, Bodmin Moor
- Ring of BrodgarAncient monument · Mainland, Orkney
- Ripperston FarmUFO case · Near Broad Haven, Pembrokeshire
- RMS LeinsterShipwreck · Off Dublin Bay
- Rob Roy's GraveMysterious grave · Balquhidder, Stirling
- Robert Emmet's RisingPlot · Thomas Street, Dublin
- Robin Hood's BayPirate · North Yorkshire coast
- Robin Hood's GraveMysterious grave · Kirklees, West Yorkshire
- Rochester CastleCastle or abbey · Rochester, Kent
- Rock of CashelCastle or abbey · Cashel, County Tipperary
- RosalLost village · Strathnaver, Sutherland
- Rosslyn ChapelLegend · Roslin, Midlothian
- Roundway DownBattlefield · Near Devizes, Wiltshire
- Roundway Star and CrescentCrop circle · Roundway Hill, near Devizes, Wiltshire
- Royston CaveUnexplained · Royston, Hertfordshire
- Ruth EllisExecution site · Holloway Prison, London
- Ruthin GaolHaunted place · Ruthin, Denbighshire
- Rye HousePlot · Hoddesdon, Hertfordshire
- Samlesbury HallHaunted place · Near Preston, Lancashire
- Sancreed Holy WellHoly well · Near Penzance, Cornwall
- Sand Rock ShelterBigfoot & Hominids · Sand, Applecross
- Sandford Orcas ManorHaunted place · Near Sherborne, Dorset
- Sawney Bean's CaveUnexplained · Bennane Head, Ayrshire
- SchiehallionLegend · Highland Perthshire
- Scorhill CircleAncient monument · Gidleigh, Dartmoor
- Scotland's Secret BunkerSecret site · Troywood, near St Andrews, Fife
- Scott's GrottoCave or grotto · Ware, Hertfordshire
- Scrabo TowerTower or folly · Newtownards, County Down
- SeahengeAncient monument · Holme-next-the-Sea, Norfolk
- SedgemoorBattlefield · Westonzoyland, Somerset
- SegontiumRoman Britain · Caernarfon, Gwynedd
- Seileag of Loch ShielDragon or monster · Loch Shiel, Lochaber
- Severndroog CastleTower or folly · Shooters Hill, London
- Shaftesbury AbbeyCastle or abbey · Shaftesbury, Dorset
- Shakespeare's GraveMysterious grave · Holy Trinity Church, Stratford-upon-Avon
- Shepton Mallet PrisonExecution site · Shepton Mallet, Somerset
- Sherborne Old CastleCastle or abbey · Sherborne, Dorset
- ShipdenLost village · Off Cromer, Norfolk
- Shoreham CrossHill figure · Shoreham, Kent
- Shrewsbury PrisonHaunted place · Shrewsbury, Shropshire
- Silbury HillAncient monument · Near Avebury, Wiltshire
- SilchesterRoman Britain · Near Basingstoke, Hampshire
- Silken ThomasPlot · St Mary's Abbey, Dublin
- Sir Andrew Wood of LargoPirate · Upper Largo, Fife
- Sir Cloudesley Shovell's FleetShipwreck · Isles of Scilly
- Sir Henry MainwaringPirate · Ightfield, Shropshire
- Sir Tatton Sykes MonumentTower or folly · Garton Hill, near Sledmere, East Yorkshire
- Sir Walter Raleigh's HeadMysterious grave · West Horsley, Surrey
- Sir Walter Scott's GraveMysterious grave · Dryburgh Abbey, Scottish Borders
- Skara BraeAncient monument · Bay of Skaill, Orkney
- Skirrid Mountain InnHaunted place · Llanfihangel Crucorney, Monmouthshire
- Slieau WhallianWitches · Near St John's, Isle of Man
- Slievemore Deserted VillageLost village · Achill Island, County Mayo
- Smailholm TowerTower or folly · Near Kelso, Scottish Borders
- SmithfieldExecution site · West Smithfield, London
- Smoo CaveCave or grotto · Durness, Sutherland
- SnapLost village · Near Aldbourne, Wiltshire
- Snettisham HoardAncient monument · Snettisham, Norfolk
- Spar CaveCave or grotto · Near Elgol, Isle of Skye
- Speedwell CavernCave or grotto · Castleton, Derbyshire
- Spike IslandSecret site · Cork Harbour, County Cork
- Spring-heeled JackUnexplained · Barnes Common, London
- Springhill HouseHaunted place · Moneymore, County Londonderry
- St Aldhelm's WellHoly well · Doulting, Somerset
- St Ann's WellHoly well · Buxton, Derbyshire
- St Ann's WellHoly well · Great Malvern, Worcestershire
- St Anthony's WellHoly well · Holyrood Park, Edinburgh
- St Augustine's WellHoly well · Cerne Abbas, Dorset
- St Briavels CastleHaunted place · Forest of Dean, Gloucestershire
- St Brigid's WellHoly well · Kildare
- St Brigid's Well, LiscannorHoly well · Near the Cliffs of Moher, County Clare
- St Clement's CavesCave or grotto · West Hill, Hastings, East Sussex
- St Clether Holy WellHoly well · Near Launceston, Cornwall
- St Cuthbert's CaveCave or grotto · Near Belford, Northumberland
- St Cuthbert's TombMysterious grave · Durham Cathedral
- St David's ShrineMysterious grave · St Davids Cathedral, Pembrokeshire
- St Declan's WellHoly well · Ardmore, County Waterford
- St Dwynwen's WellHoly well · Llanddwyn Island, Anglesey
- St Edmund's Lost BodyMysterious grave · Abbey Gardens, Bury St Edmunds, Suffolk
- St Fillan's PoolHoly well · Strathfillan, near Crianlarich
- St Fintan's TreeHoly well · Clonenagh, County Laois
- St Gobnait's ShrineHoly well · Ballyvourney, County Cork
- St Govan's ChapelLegend · Bosherston, Pembrokeshire
- St Kevin's BedCave or grotto · Upper Lake, Glendalough, County Wicklow
- St Keyne's WellHoly well · St Keyne, near Liskeard, Cornwall
- St KildaLost village · Outer Hebrides
- St Mary's Clootie WellHoly well · Culloden Woods, near Inverness
- St Maughold's WellHoly well · Maughold Head, Isle of Man
- St Michael's MountLegend · Marazion, Cornwall
- St Nectan's GlenHoly well · Near Tintagel, Cornwall
- St Ninian's CaveCave or grotto · Physgill, near Whithorn
- St Non's WellHoly well · St Davids, Pembrokeshire
- St Patrick's GraveMysterious grave · Down Cathedral, Downpatrick, County Down
- St Patrick's Well, ClonmelHoly well · Near Clonmel, County Tipperary
- St Richard GwynExecution site · Beast Market, Wrexham
- St Robert's CaveCave or grotto · Knaresborough, North Yorkshire
- St Seiriol's WellHoly well · Penmon, Anglesey
- St Trillo's ChapelHoly well · Rhos-on-Sea, Conwy
- St Winefride's WellHoly well · Holywell, Flintshire
- St Winifred's Well, WoolstonHoly well · Woolston, near Oswestry, Shropshire
- St Wite's Well and ShrineHoly well · Whitchurch Canonicorum, Dorset
- Staffordshire HoardLost treasure · Hammerwich, Staffordshire
- Stamford BridgeBattlefield · East Riding of Yorkshire
- Stanton DrewAncient monument · Near Bristol, Somerset
- Star CarrBigfoot & Hominids · Near Scarborough, North Yorkshire
- Stirling CastleHaunted place · Stirling
- Stirling Old Town JailExecution site · Stirling
- StonehengeAncient monument · Salisbury Plain, Wiltshire
- Stones of StennessAncient monument · Mainland, Orkney
- Stoney Littleton Long BarrowAncient monument · Wellow, Somerset
- Stoodley PikeTower or folly · Near Todmorden, West Yorkshire
- Strata Florida AbbeyCastle or abbey · Pontrhydfendigaid, Ceredigion
- Streedagh StrandShipwreck · Streedagh, County Sligo
- StromaLost village · Pentland Firth, Caithness
- Strongbow's TombMysterious grave · Christ Church Cathedral, Dublin
- Struell WellsHoly well · Near Downpatrick, County Down
- Studland BayPirate · Isle of Purbeck, Dorset
- Stump Cross CavernsCave or grotto · Near Pateley Bridge, North Yorkshire
- Sutton HooLost treasure · Near Woodbridge, Suffolk
- Swanscombe SkullBigfoot & Hominids · Swanscombe, Kent
- Sweetheart AbbeyMysterious grave · New Abbey, Dumfries and Galloway
- SwinsideAncient monument · Near Broughton-in-Furness, Cumbria
- Sycamore GapRoman Britain · Hadrian's Wall, Northumberland
- Tamworth CastleHaunted place · Tamworth, Staffordshire
- Tantallon CastleCastle or abbey · Near North Berwick, East Lothian
- Tarr StepsLegend · Exmoor, Somerset
- Tawsmead CopseCrop circle · Near West Stowell, Wiltshire
- Teggie of Llyn TegidDragon or monster · Bala Lake, Gwynedd
- Tewkesbury and the Bloody MeadowBattlefield · Tewkesbury, Gloucestershire
- The A70 IncidentUFO case · Near Harthill, West Lothian
- The A75 Kinmount StraightHaunted place · Near Annan, Dumfries and Galloway
- The Aberdeen Witch TrialsWitches · Aberdeen
- The AdelaarShipwreck · Greian Head, Isle of Barra
- The Afanc of Llyn BarfogDragon or monster · Llyn Barfog, near Aberdyfi, Gwynedd
- The Afanc of Llyn yr AfancDragon or monster · River Conwy, near Betws-y-Coed
- The Alderney SightingUFO case · Off Alderney, Channel Islands
- The Alfred Burtoo EncounterUFO case · Basingstoke Canal, Aldershot
- The Alien Autopsy FilmUFO case · London
- The Aller DragonDragon or monster · Aller, near Langport, Somerset
- The Amesbury ArcherAncient monument · Amesbury, Wiltshire
- The AmsterdamShipwreck · Bulverhythe, near Hastings
- The Ancient Ram InnHaunted place · Wotton-under-Edge, Gloucestershire
- The Antonine WallRoman Britain · Rough Castle, near Falkirk
- The Appin MurderPlot · Lettermore Wood, near Ballachulish
- The Ardagh ChaliceLost treasure · Ardagh, County Limerick
- The Arecibo ReplyCrop circle · Chilbolton, Hampshire
- The Arthur's Seat CoffinsUnexplained · Edinburgh
- The Aveley AbductionUFO case · Aveley, Essex
- The Babes in the WoodMysterious grave · Wayland Wood, near Watton, Norfolk
- The Babington PlotPlot · Chartley, Staffordshire
- The Battersea ShieldAncient monument · River Thames, London
- The Battle of AughrimBattlefield · Aughrim, County Galway
- The Battle of BarnetBattlefield · Hadley Green, Barnet, London
- The Battle of BenburbBattlefield · Benburb, County Tyrone
- The Battle of BonnymuirPlot · Near Bonnybridge, Falkirk
- The Battle of Bryn GlasBattlefield · Pilleth, Powys
- The Battle of ClontarfBattlefield · Clontarf, Dublin
- The Battle of Crug MawrBattlefield · Near Cardigan, Ceredigion
- The Battle of EthandunBattlefield · Edington, Wiltshire
- The Battle of FulfordBattlefield · Fulford, York
- The Battle of HarlawBattlefield · Near Inverurie, Aberdeenshire
- The Battle of KinsaleBattlefield · Kinsale, County Cork
- The Battle of LangportBattlefield · Langport, Somerset
- The Battle of LansdownBattlefield · Lansdown Hill, near Bath
- The Battle of LargsBattlefield · Largs, Ayrshire
- The Battle of LewesBattlefield · Lewes, East Sussex
- The Battle of MontgomeryBattlefield · Montgomery, Powys
- The Battle of Mynydd HyddgenBattlefield · Pumlumon, Ceredigion
- The Battle of NechtansmereBattlefield · Dunnichen, Angus
- The Battle of OtterburnBattlefield · Otterburn, Northumberland
- The Battle of SheriffmuirBattlefield · Near Dunblane, Perthshire
- The Battle of St FagansBattlefield · St Fagans, Cardiff
- The Battle of Stirling BridgeBattlefield · Stirling
- The Battle of the BoyneBattlefield · Near Drogheda, County Meath
- The Battle of the Yellow FordBattlefield · Near Armagh
- The Battle of WakefieldBattlefield · Sandal Castle, Wakefield, West Yorkshire
- The Battle of WorcesterBattlefield · Worcester
- The Beast of Bodmin MoorUnexplained · Bodmin Moor, Cornwall
- The Beast of Brassknocker HillBigfoot & Hominids · Monkton Combe, near Bath, Somerset
- The Beast of ExmoorUnexplained · Near South Molton, Devon
- The Bexleyheath SaucerUFO case · Bexleyheath, London
- The Bideford WitchesWitches · Bideford, Devon
- The Big Grey ManBigfoot & Hominids · Ben Macdhui, Cairngorms
- The Bisterne DragonDragon or monster · Bisterne, near Ringwood, Hampshire
- The Black Monk of PontefractHaunted place · Pontefract, West Yorkshire
- The Black Prince's TombMysterious grave · Canterbury Cathedral, Kent
- The Bloody Assizes at TauntonExecution site · Taunton Castle, Somerset
- The Blowing StoneLegend · Kingston Lisle, Oxfordshire
- The Blue Men of the MinchDragon or monster · Sound of Shiant, Outer Hebrides
- The Bluestone QuarriesUnexplained · Craig Rhos-y-felin, Preseli Hills, Pembrokeshire
- The Bolam Lake BeastBigfoot & Hominids · Bolam Lake, Northumberland
- The Bone Caves of InchnadamphBigfoot & Hominids · Creag nan Uamh, Assynt
- The Boscombe BowmenBigfoot & Hominids · Boscombe Down, Wiltshire
- The Boulmer Radar SightingUFO case · RAF Boulmer, Northumberland
- The Brahan SeerUnexplained · Chanonry Point, Black Isle
- The Brinsop DragonDragon or monster · Brinsop, Herefordshire
- The Brixham Coastguard SightingUFO case · Berry Head, Devon
- The Broch of MousaAncient monument · Mousa, Shetland
- The Broighter GoldLost treasure · Broighter, County Londonderry
- The Buggane of St Trinian'sBigfoot & Hominids · St Trinian's Church, near Crosby, Isle of Man
- The Bulford KiwiHill figure · Beacon Hill, Bulford, Wiltshire
- The Bures DragonDragon or monster · Bures, Suffolk
- The Burns MausoleumMysterious grave · St Michael's churchyard, Dumfries
- The Burton HoardLost treasure · Burton, near Wrexham
- The Burton Pynsent MonumentTower or folly · Curry Rivel, Somerset
- The Bury St Edmunds HangingsWitches · Bury St Edmunds, Suffolk
- The Busby Stoop ChairHaunted place · Thirsk Museum, North Yorkshire
- The Caergwrle BowlLost treasure · Caergwrle, Flintshire
- The Caoránach of Lough DergDragon or monster · Lough Derg, County Donegal
- The Capel Garmon FiredogLost treasure · Capel Garmon, Conwy
- The Cardiff MartyrsExecution site · Gallows Field, Cardiff
- The Caves of KeashCave or grotto · Keshcorran, County Sligo
- The Cerne Abbas SpiderCrop circle · Near Cerne Abbas, Dorset
- The Chalybeate SpringHoly well · Royal Tunbridge Wells, Kent
- The Charlton CraterUFO case · Charlton, near Pewsey, Wiltshire
- The Chartist Trial, MonmouthExecution site · Shire Hall, Monmouth
- The Chelmsford Witch TrialsWitches · Chelmsford, Essex
- The Children of LirLegend · Lough Derravaragh, County Westmeath
- The Christchurch DragonDragon or monster · Christchurch, Dorset
- The Churchill BarriersSecret site · Holm to South Ronaldsay, Orkney
- The City of CavesCave or grotto · Nottingham
- The Clacton SpearBigfoot & Hominids · Clacton-on-Sea, Essex
- The Clerkenwell ExplosionPlot · Clerkenwell, London
- The Cock Lane GhostHaunted place · Smithfield, London
- The Coleraine HoardLost treasure · Ballinrees, County Londonderry
- The Commando MemorialSecret site · Spean Bridge, Lochaber
- The Conisholme Wind TurbineUFO case · Conisholme, Lincolnshire
- The Coniston SaucerUFO case · Old Man of Coniston, Cumbria
- The Cononley Moor SightingUFO case · A629 near Skipton, North Yorkshire
- The Cornish RebellionPlot · St Keverne, Cornwall
- The Corryvreckan WhirlpoolLegend · Between Jura and Scarba, Argyll
- The Cosford IncidentUFO case · RAF Shawbury, Shropshire
- The Cottingley FairiesUnexplained · Cottingley, West Yorkshire
- The Crabwood FaceCrop circle · Near Sparsholt, Winchester, Hampshire
- The Cramond LionessRoman Britain · Cramond, Edinburgh
- The Croglin VampireUnexplained · Croglin, Cumbria
- The Crook of Devon WitchesWitches · Crook of Devon, Kinross-shire
- The Crosby Garrett HelmetLost treasure · Crosby Garrett, Cumbria
- The Crystal GrottoCave or grotto · Painshill Park, Cobham, Surrey
- The Culbin SandsLost village · Near Findhorn, Moray
- The Cumbrian SpacemanUFO case · Burgh Marsh, Cumbria
- The Curragh 'K-Lines'Secret site · The Curragh, County Kildare
- The Céide FieldsBigfoot & Hominids · Near Ballycastle, County Mayo
- The Daphne DisasterShipwreck · Linthouse, Glasgow
- The Deal BoatmenPirate · Deal, Kent
- The Death of Amy RobsartUnexplained · Cumnor, Oxfordshire
- The Deerhurst DragonDragon or monster · Deerhurst, Gloucestershire
- The Denge Sound MirrorsSecret site · Greatstone, Kent
- The Derrynaflan HoardLost treasure · Derrynaflan, County Tipperary
- The Despard PlotPlot · Lambeth, London
- The Devil's ArrowsAncient monument · Boroughbridge, North Yorkshire
- The Devil's FootprintsUnexplained · Exe estuary, Devon
- The Devon Flying CrossUFO case · Near Holsworthy, Devon
- The Disappearance of Foxtrot 94UFO case · RAF Binbrook, Lincolnshire
- The Discovery of Ley LinesUnexplained · Blackwardine, near Leominster, Herefordshire
- The Dobhar-chúDragon or monster · Glenade Lough, County Leitrim
- The Dolgellau ChaliceLost treasure · Near Dolgellau, Gwynedd
- The Doolough Famine WalkLost village · Doolough Valley, County Mayo
- The Dorset CursusAncient monument · Cranborne Chase, Dorset
- The Dorset OoserUnexplained · Melbury Osmond, Dorset
- The Dover Bronze Age BoatAncient monument · Dover, Kent
- The Dragon of DenbighDragon or monster · Denbigh, Denbighshire
- The Dragon of LlanrhaeadrDragon or monster · Llanrhaeadr-ym-Mochnant, Powys
- The Dragon of Loschy HillDragon or monster · Nunnington, North Yorkshire
- The Dragon of WantleyDragon or monster · Wharncliffe Crags, South Yorkshire
- The Drummer of TedworthHaunted place · Tidworth, Wiltshire
- The Duck and Drake InnPlot · The Strand, London
- The Dunmore PineappleTower or folly · Near Airth, Falkirk
- The Dwarfie StaneCave or grotto · Rackwick valley, Hoy, Orkney
- The Easter RisingPlot · General Post Office, Dublin
- The Ebbsfleet ElephantBigfoot & Hominids · Ebbsfleet, Kent
- The Edinburgh VaultsHaunted place · South Bridge, Edinburgh
- The Eleanor CrossesMysterious grave · Geddington, Northamptonshire
- The Ellan VanninShipwreck · Mersey Bar, Liverpool Bay
- The Enfield PoltergeistHaunted place · Enfield, London
- The Essex RebellionPlot · Essex House, Strand, London
- The Execution of Charles IExecution site · Banqueting House, Whitehall, London
- The Eyemouth DisasterShipwreck · Eyemouth, Scottish Borders
- The Faddan More PsalterLost treasure · Faddan More, County Tipperary
- The Fairy BridgeUnexplained · Near Santon, Isle of Man
- The Fairy FlagUnexplained · Dunvegan Castle, Isle of Skye
- The Farnborough DiscusUFO case · Royal Aircraft Establishment, Farnborough
- The Fields Around SilburyCrop circle · Near Avebury, Wiltshire
- The First Battle of St AlbansBattlefield · St Albans, Hertfordshire
- The Flying Saucer Working PartyUFO case · Whitehall, London
- The Forfar Witches' BridleWitches · Forfar, Angus
- The Forfarshire and Grace DarlingShipwreck · Big Harcar, Farne Islands, Northumberland
- The Fovant BadgesHill figure · Fovant, Wiltshire
- The French Fleet in Bantry BayPlot · Bantry Bay, County Cork
- The Fylingdales Radar MysteryUFO case · RAF Fylingdales, North York Moors
- The Gallops KnotCrop circle · Sutton Veny, near Warminster, Wiltshire
- The Gatwick SaucerUFO case · Near Handcross, West Sussex
- The Ghillie DhuBigfoot & Hominids · Near Gairloch, Wester Ross
- The Ghosts of the TowerHaunted place · Tower Green, London
- The Giant of GrabbistHill figure · Grabbist Hill, Dunster, Somerset
- The Giant's CausewayLegend · County Antrim, Northern Ireland
- The Giant's GraveMysterious grave · St Andrew's Churchyard, Penrith, Cumbria
- The Giant's HedgeHill figure · Between Lerryn and Looe, Cornwall
- The GironaShipwreck · Lacada Point, County Antrim
- The Glasgow NecropolisMysterious grave · Glasgow
- The Gleninsheen GorgetLost treasure · The Burren, County Clare
- The Glossop and Hindley Police SightingsUFO case · Glossop, Derbyshire
- The Golden FleeceHaunted place · Pavement, York
- The Gough's Cave Skull CupsBigfoot & Hominids · Cheddar Gorge, Somerset
- The Grace DieuShipwreck · River Hamble, Bursledon, Hampshire
- The Grassmarket GallowsExecution site · Grassmarket, Edinburgh
- The Great BlasketLost village · Blasket Islands, County Kerry
- The Great Flying Saucer HoaxUFO case · Farnborough, Hampshire
- The Great Hall, WinchesterPlot · Winchester, Hampshire
- The Green ChildrenUnexplained · Woolpit, Suffolk
- The GrenadierHaunted place · Belgravia, London
- The Grotto at StourheadCave or grotto · Stourton, Wiltshire
- The Guildford Storm CirclesCrop circle · Near Guildford, Surrey
- The Gurt Wurm of Shervage WoodDragon or monster · Shervage Wood, Quantock Hills, Somerset
- The Gwiber of Llyn CynwchDragon or monster · Near Dolgellau, Gwynedd
- The Gwiber of PenmachnoDragon or monster · Penmachno, Conwy
- The Hackney HoardLost treasure · Hackney, London
- The Hag's Chair, LoughcrewHill figure · Loughcrew, County Meath
- The Hairy HandsUnexplained · Postbridge, Dartmoor
- The Halifax GibbetExecution site · Gibbet Street, Halifax, West Yorkshire
- The Hand of GloryMysterious grave · Whitby Museum, North Yorkshire
- The Hanging of William BurkeExecution site · Lawnmarket, Edinburgh
- The Hardy MonumentTower or folly · Black Down, near Portesham, Dorset
- The Hartlepool MonkeyExecution site · Hartlepool, County Durham
- The Haven Fort HotelUFO case · Little Haven, Pembrokeshire
- The Hawkhurst GangPirate · Hawkhurst, Kent
- The Heart of MidlothianExecution site · Royal Mile, Edinburgh
- The Hellfire ClubUnexplained · Montpelier Hill, Dublin
- The Henham DragonDragon or monster · Henham, Essex
- The Herefordshire HoardLost treasure · Near Leominster, Herefordshire
- The Hermit's CaveCave or grotto · Cratcliffe Tor, Derbyshire
- The Herzogin CecilieShipwreck · Starehole Bay, near Salcombe, Devon
- The Hexham HeadsUnexplained · Hexham, Northumberland
- The Highgate VampireHaunted place · Highgate Cemetery, London
- The Hill of TaraLegend · County Meath
- The Hill of UisneachLegend · County Westmeath
- The Hinton St Mary MosaicRoman Britain · Hinton St Mary, Dorset
- The Hoad MonumentTower or folly · Ulverston, Cumbria
- The Holy Well, Holywell BayHoly well · Holywell Bay, near Newquay, Cornwall
- The Home Counties Police SightingsUFO case · Arkesden, Essex
- The HotwellsHoly well · Avon Gorge, Bristol
- The Howden Moors IncidentUFO case · Upper Derwent, Peak District
- The Hubberston School SightingUFO case · Milford Haven, Pembrokeshire
- The Hunterston BroochLost treasure · Hunterston, Ayrshire
- The HurlersAncient monument · Minions, Bodmin Moor
- The Hythe CryptUnexplained · St Leonard's Church, Hythe, Kent
- The Ickleton MandelbrotCrop circle · Ickleton, Cambridgeshire
- The Ilkley Moor AlienUFO case · Ilkley Moor, West Yorkshire
- The Ipswich TorcsLost treasure · Belstead Brook estate, Ipswich, Suffolk
- The Islandmagee Witch TrialWitches · Islandmagee, County Antrim
- The Italian ChapelSecret site · Lamb Holm, Orkney
- The Jubilee Tower, Moel FamauTower or folly · Moel Famau, Denbighshire
- The Julia SetCrop circle · Opposite Stonehenge, Wiltshire
- The Kellington SerpentDragon or monster · Kellington, North Yorkshire
- The KelpiesDragon or monster · Helix Park, Falkirk
- The KennemerlandShipwreck · Out Skerries, Shetland
- The Killigrews of FalmouthPirate · Falmouth, Cornwall
- The Kingsway TunnelsSecret site · Chancery Lane, London
- The Kirkcaldy DiamondUFO case · Kirkcaldy, Fife
- The Knucker of LyminsterDragon or monster · Lyminster, West Sussex
- The Knucklas WyvernDragon or monster · Knucklas, Powys
- The Kymin Round HouseTower or folly · The Kymin, Monmouth
- The Lady of Llyn y Fan FachDragon or monster · Black Mountain, Carmarthenshire
- The Lady's WellHoly well · Holystone, Northumberland
- The Laidly WormLegend · Spindleston Heugh, Northumberland
- The Lamb Down BadgeHill figure · Codford, Wiltshire
- The Lambton WormLegend · Penshaw Hill, County Durham
- The Langdale Axe FactoryAncient monument · Pike of Stickle, Cumbria
- The Last Invasion of BritainBattlefield · Carregwastad Point, near Fishguard, Pembrokeshire
- The Latoon Fairy BushUnexplained · Latoon, County Clare
- The LaurenticShipwreck · Off Fanad Head, County Donegal
- The Leekfrith TorcsLost treasure · Leekfrith, Staffordshire
- The Lenborough HoardLost treasure · Near Buckingham, Buckinghamshire
- The Lenham CrossHill figure · Lenham, Kent
- The Lewes MartyrsExecution site · Lewes, East Sussex
- The Lewis ChessmenLost treasure · Uig, Isle of Lewis
- The Linton WormDragon or monster · Linton Kirk, Roxburghshire
- The Little Rissington IncidentUFO case · RAF Little Rissington, Gloucestershire
- The Llandeilo Graban DragonDragon or monster · Llandeilo Graban, Powys
- The Loch Arkaig TreasureLost treasure · Loch Arkaig, Lochaber
- The Loch Hourn Sea SerpentDragon or monster · Loch Hourn, Highlands
- The Logan RockHill figure · Treen, near Porthcurno, Cornwall
- The Logierait MortsafesMysterious grave · Logierait, Perthshire
- The London MithraeumRoman Britain · Walbrook, City of London
- The Long Compton Witch MurderWitches · Long Compton, Warwickshire
- The Long Man of WilmingtonHill figure · Wilmington, East Sussex
- The Longdendale LightsUFO case · Bleaklow, Peak District
- The Longhill Park LandingUFO case · Longhill, Hull
- The Longwitton DragonDragon or monster · Longwitton, Northumberland
- The Lost City of TrellechLost village · Trellech, Monmouthshire
- The Lost Giants of WandleburyHill figure · Gog Magog Hills, Cambridgeshire
- The Lost Ninth LegionUnexplained · York
- The Lost Village of LawersLost village · Lawers, Loch Tay, Perthshire
- The Lough Kinale Book ShrineLost treasure · Lough Kinale, County Longford
- The Lough Nahooin CreatureDragon or monster · Near Claddaghduff, Connemara
- The Lough Ree MonsterDragon or monster · Lough Ree, County Roscommon
- The Ludham DragonDragon or monster · Ludham, Norfolk
- The LusitaniaShipwreck · Off the Old Head of Kinsale, County Cork
- The Lydstep PigBigfoot & Hominids · Lydstep Haven, Pembrokeshire
- The Maid of Cefn YdfaMysterious grave · Llangynwyd, near Maesteg
- The MaidenExecution site · National Museum of Scotland, Edinburgh
- The Major OakLegend · Sherwood Forest, Nottinghamshire
- The Man-MonkeyBigfoot & Hominids · Shropshire Union Canal, Staffordshire
- The Manchester MartyrsPlot · Hyde Road, Manchester
- The Manston Shoot-Down OrderUFO case · RAF Manston, Kent
- The Marquess of Anglesey's ColumnTower or folly · Llanfairpwll, Anglesey
- The Mary RoseShipwreck · Portsmouth Historic Dockyard, Hampshire
- The Massacre of GlencoeBattlefield · Glencoe, Highlands
- The Maunsell Sea FortsSecret site · Red Sands, Thames Estuary
- The Mermaid InnPirate · Rye, East Sussex
- The Mermaid of ZennorLegend · Zennor, Cornwall
- The Merry MaidensAncient monument · Lamorna, Cornwall
- The Merthyr RisingPlot · Merthyr Tydfil
- The Mester Stoor WormDragon or monster · Orkney
- The Micheldever TwinsCrop circle · Chilland Lane, near Winchester, Hampshire
- The Mohegan and the ManaclesShipwreck · The Manacles, near St Keverne, Cornwall
- The Mold Gold CapeLost treasure · Bryn yr Ellyllon, Flintshire
- The Monymusk ReliquaryLost treasure · Monymusk, Aberdeenshire
- The Mooghaun HoardLost treasure · Near Newmarket-on-Fergus, County Clare
- The Moor Sand WreckAncient monument · Salcombe, Devon
- The Mordiford DragonDragon or monster · Mordiford, Herefordshire
- The Mormond StagHill figure · Mormond Hill, Aberdeenshire
- The Mount's Bay RaidPirate · Mount's Bay, Cornwall
- The Moving Statue of BallinspittleUnexplained · Ballinspittle, County Cork
- The Mowing-DevilCrop circle · Hertfordshire
- The Muirdris of Dundrum BayDragon or monster · Dundrum Bay, County Down
- The Mummies of St Michan'sMysterious grave · St Michan's Church, Dublin
- The Murder of David RizzioPlot · Palace of Holyroodhouse, Edinburgh
- The Nanteos CupUnexplained · Nanteos, near Aberystwyth, Ceredigion
- The National Wallace MonumentTower or folly · Abbey Craig, Stirling
- The Ness of BrodgarAncient monument · Mainland, Orkney
- The Newport RisingPlot · Westgate Hotel, Newport
- The Norrie's Law HoardLost treasure · Largo, Fife
- The North Berwick Witch TrialsWitches · Auld Kirk Green, North Berwick, East Lothian
- The O'Driscolls of BaltimorePirate · Dún na Séad, Baltimore, County Cork
- The Owlers of Romney MarshPirate · Romney Marsh, Kent
- The Owlman of MawnanUnexplained · Mawnan Smith, Cornwall
- The Oxford MartyrsExecution site · Broad Street, Oxford
- The Paisley WitchesWitches · George Street, Paisley, Renfrewshire
- The Peasants' RevoltPlot · Blackheath, London
- The Penlee Lifeboat DisasterShipwreck · Off Mousehole, Cornwall
- The Pentney BroochesLost treasure · Pentney, Norfolk
- The Pentrich RisingPlot · Pentrich, Derbyshire
- The Pentyrch IncidentUFO case · Pentyrch, near Cardiff
- The Phantom AirshipsUFO case · Peterborough, Cambridgeshire
- The Phoenix Park MurdersPlot · Phoenix Park, Dublin
- The Pilgrimage of GracePlot · Clifford's Tower, York
- The Pittenweem WitchesWitches · Pittenweem, Fife
- The Plymouth Hoe GiantsHill figure · Plymouth Hoe, Devon
- The Pollard WormDragon or monster · Bishop Auckland, County Durham
- The Pollock TwinsUnexplained · Hexham, Northumberland
- The Prayer Book RebellionPlot · Sampford Courtenay, Devon
- The Princes in the TowerUnexplained · Tower of London
- The Princess AliceShipwreck · Tripcock Point, Thamesmead, London
- The Princess VictoriaShipwreck · North Channel, off the Copeland Islands
- The Principality of SealandSecret site · Roughs Tower, off Felixstowe, Suffolk
- The Ranton EncounterUFO case · Vicarage Farm, Ranton, Staffordshire
- The Rathlin Island MassacrePirate · Rathlin Island, County Antrim
- The Rebecca RiotsPlot · Efailwen, Carmarthenshire
- The Red Horse of TysoeHill figure · Tysoe, Warwickshire
- The Red Lady of PavilandBigfoot & Hominids · Gower, Swansea
- The Red Lion, AveburyHaunted place · Avebury, Wiltshire
- The ResurgamShipwreck · Off Rhyl, Denbighshire
- The Ringlemere CupLost treasure · Ringlemere, near Sandwich, Kent
- The Robber's GraveMysterious grave · St Nicholas churchyard, Montgomery
- The RohillaShipwreck · Saltwick Nab, near Whitby, North Yorkshire
- The Rollright StonesAncient monument · Long Compton, Oxfordshire
- The Roman Baths and Sulis MinervaHoly well · Bath, Somerset
- The Rothesay CastleShipwreck · Off Puffin Island, Anglesey
- The Royal AdelaideShipwreck · Chesil Beach, Dorset
- The Royal CharterShipwreck · Moelfre, Anglesey
- The Royal Pump RoomHoly well · Harrogate, North Yorkshire
- The Rudston MonolithAncient monument · Rudston, East Yorkshire
- The Running TradePirate · Douglas, Isle of Man
- The Ruthven RaidPlot · Huntingtower Castle, Perth
- The Sack of BaltimorePirate · Baltimore, County Cork
- The Saffron Walden CockatriceDragon or monster · Saffron Walden, Essex
- The Samlesbury WitchesWitches · Samlesbury, Lancashire
- The Samtampa and the Mumbles LifeboatShipwreck · Sker Point, Porthcawl
- The Sands of ForvieLost village · Near Newburgh, Aberdeenshire
- The Santa María de la RosaShipwreck · Blasket Sound, County Kerry
- The Scoriton MysteryUFO case · Scoriton, Devon
- The Scott MonumentTower or folly · Princes Street Gardens, Edinburgh
- The Screaming Skull of BettiscombeHaunted place · Bettiscombe, Dorset
- The Sculptor's CaveCave or grotto · Covesea, Moray
- The Scuttling at Scapa FlowShipwreck · Scapa Flow, Orkney
- The Seaton Down HoardLost treasure · Near Seaton, Devon
- The Sheerness AirshipUFO case · Sheerness, Kent
- The Shell GrottoUnexplained · Margate, Kent
- The Shetland BusSecret site · Scalloway, Shetland
- The Shug MonkeyBigfoot & Hominids · West Wratting, Cambridgeshire
- The Siege of DerryBattlefield · Derry/Londonderry
- The Siege of DroghedaBattlefield · Drogheda, County Louth
- The Silent PoolLegend · Near Shere, Surrey
- The Silpho Moor SaucerUFO case · Near Scarborough, North Yorkshire
- The Silverdale HoardLost treasure · Silverdale, Lancashire
- The Slingsby SerpentDragon or monster · Slingsby, North Yorkshire
- The Smugglers of RushPirate · Rush, County Dublin
- The Sockburn WormDragon or monster · Sockburn, County Durham
- The Southampton Officer's EncounterUFO case · Southampton, Hampshire
- The Southern Television BroadcastUnexplained · Hannington transmitter, Hampshire
- The Southwell DeviantMysterious grave · Southwell, Nottinghamshire
- The Springs of WellsHoly well · Bishop's Palace, Wells, Somerset
- The SS MendiShipwreck · Off St Catherine's Point, Isle of Wight
- The SS PoliticianShipwreck · Eriskay, Outer Hebrides
- The SS Richard MontgomeryShipwreck · Thames Estuary, off Sheerness, Kent
- The SS SchillerShipwreck · Retarrier Ledges, Isles of Scilly
- The St Leonard's Forest SerpentDragon or monster · St Leonard's Forest, near Horsham, West Sussex
- The St Ninian's Isle TreasureLost treasure · St Ninian's Isle, Shetland
- The Stanford Battle Area VillagesLost village · Breckland, Norfolk
- The Stanmore Police SightingUFO case · Stanmore, London
- The Stirling HoardLost treasure · Near Stirling
- The Stoke Charity CubeCrop circle · Stoke Charity, near Sutton Scotney, Hampshire
- The Stolen Irish Crown JewelsLost treasure · Dublin Castle
- The Stone of DestinyUnexplained · Scone, Perth and Kinross
- The Stonehenge StarfishCrop circle · Near the Stonehenge visitor centre, Wiltshire
- The Sugar LoafTower or folly · Brightling, East Sussex
- The Swan, Duart PointShipwreck · Duart Point, Isle of Mull
- The Sweet TrackAncient monument · Shapwick, Somerset Levels
- The Tara BroochLost treasure · Bettystown, County Meath
- The Tattingstone WonderTower or folly · Tattingstone, Suffolk
- The TayleurShipwreck · Lambay Island, County Dublin
- The Temple of NodensRoman Britain · Lydney Park, Gloucestershire
- The Thetford TreasureLost treasure · Thetford, Norfolk
- The Throckmorton PlotPlot · Paul's Wharf, London
- The Tobermory GalleonLost treasure · Tobermory Bay, Isle of Mull
- The Tolpuddle MartyrsPlot · Tolpuddle, Dorset
- The Tomb of Edward IIMysterious grave · Gloucester Cathedral
- The Tomb of the Unknown WarriorMysterious grave · Westminster Abbey, London
- The Torrey CanyonShipwreck · Seven Stones reef, off Land's End, Cornwall
- The Tower Hill ScaffoldExecution site · Trinity Square Gardens, London
- The Tower of LloydTower or folly · Hill of Lloyd, Kells, County Meath
- The Trawsfynydd TankardLost treasure · Trawsfynydd, Gwynedd
- The Treacle WellHoly well · Binsey, Oxford
- The Treaty StoneBattlefield · Limerick
- The Tregwynt HoardLost treasure · Tregwynt, Pembrokeshire
- The Tyndale MonumentTower or folly · North Nibley, Gloucestershire
- The UndercroftPlot · Palace of Westminster, London
- The Upton Priory SchoolchildrenUFO case · Macclesfield, Cheshire
- The Upwey Wishing WellHoly well · Upwey, near Weymouth, Dorset
- The Vampire of AlnwickMysterious grave · Alnwick, Northumberland
- The Vanishing of Lord LucanUnexplained · Belgravia, London
- The Vanishing of Owain GlyndŵrUnexplained · Glyndyfrdwy, Denbighshire
- The W.M. BarkleyShipwreck · Off the Kish Bank, Dublin Bay
- The Walnut Tree Pub SightingUFO case · Near Tunbridge Wells, Kent
- The Water Newton TreasureLost treasure · Water Newton, Cambridgeshire
- The Waterloo Bridge SightingUFO case · Waterloo Bridge, London
- The Waterloo Monument, Peniel HeughTower or folly · Near Ancrum, Scottish Borders
- The Watlington White MarkHill figure · Watlington, Oxfordshire
- The Wellington MonumentTower or folly · Near Wellington, Somerset
- The Wemyss CavesCave or grotto · East Wemyss, Fife
- The Westray WifeAncient monument · Links of Noltland, Westray
- The Wetwang Chariot BurialsAncient monument · Wetwang, East Yorkshire
- The Wherwell CockatriceDragon or monster · Wherwell, Hampshire
- The Whipsnade LionHill figure · Dunstable Downs, Bedfordshire
- The White SpringHoly well · Glastonbury, Somerset
- The Whittington StoneLegend · Highgate Hill, London
- The Wicked LadyMysterious grave · Markyate, Hertfordshire
- The Wild Man of OrfordBigfoot & Hominids · Orford, Suffolk
- The Winchester EncounterUFO case · Chilcomb, Hampshire
- The Witch in a BottleWitches · Pitt Rivers Museum, Oxford
- The Witch of EdmontonWitches · Edmonton, north London
- The Witch of Scrapfaggot GreenMysterious grave · Great Leighs, Essex
- The Witch's Stone, SpottWitches · Spott, East Lothian
- The Witches of BelvoirWitches · Bottesford, Leicestershire
- The Witches of LlanddonaWitches · Llanddona, Anglesey
- The Witches of WarboysWitches · Warboys, Cambridgeshire
- The Witches' Stone, ForresWitches · Forres, Moray
- The Witches' WellWitches · Castle Esplanade, Edinburgh
- The Worcester AffairPirate · Leith, Edinburgh
- The Wormingford DragonDragon or monster · Wormingford, Essex
- The WrekinHill figure · Near Telford, Shropshire
- The Wye CrownHill figure · Wye, Kent
- The Wyvern of Newcastle EmlynDragon or monster · Newcastle Emlyn, Carmarthenshire
- The ÉIRE SignsSecret site · Malin Head, County Donegal
- Theatre Royal, Drury LaneHaunted place · Covent Garden, London
- Thomas Hardy's HeartMysterious grave · Stinsford, Dorset
- Thomas Knight of Barry IslandPirate · Barry Island, Vale of Glamorgan
- Thor's CaveCave or grotto · Manifold Valley, Staffordshire
- Thornborough HengesAncient monument · Near Ripon, North Yorkshire
- Tidcombe StarCrop circle · Between Silver Down and Maccombe Down, Tidcombe, Wiltshire
- Tide MillsLost village · Near Newhaven, East Sussex
- Tigh nam BodachHill figure · Glen Cailliche, Glen Lyon, Perthshire
- Timahoe Round TowerTower or folly · Timahoe, County Laois
- TinkinswoodAncient monument · St Nicholas, Vale of Glamorgan
- TintagelLegend · North Cornwall
- Tintern AbbeyCastle or abbey · Wye Valley, Monmouthshire
- Tissington Well DressingsHoly well · Tissington, Derbyshire
- Tobernalt Holy WellHoly well · Near Sligo
- TodmordenUFO case · Calder Valley, West Yorkshire
- Tom Hickathrift's GraveHill figure · Tilney All Saints, Norfolk
- Tom Otter's GibbetExecution site · Saxilby, Lincolnshire
- Tomb of the EaglesAncient monument · Isbister, South Ronaldsay
- Tomen y MurRoman Britain · Near Trawsfynydd, Gwynedd
- TowtonBattlefield · Near Tadcaster, North Yorkshire
- Traprain Law TreasureLost treasure · Near East Linton, East Lothian
- Tre'r CeiriAncient monument · Yr Eifl, Gwynedd
- Treasurer's HouseHaunted place · York
- Trencrom HillHill figure · Near Lelant, Cornwall
- Trim CastleCastle or abbey · Trim, County Meath
- TrimontiumRoman Britain · Newstead, near Melrose
- Tutbury CastleHaunted place · Tutbury, Staffordshire
- Twm Siôn Cati's CaveLegend · Rhandirmwyn, Carmarthenshire
- TyburnExecution site · Marble Arch, London
- TynehamLost village · Isle of Purbeck, Dorset
- Uffington White HorseLegend · Vale of White Horse, Oxfordshire
- Urquhart CastleCastle or abbey · Loch Ness, Highlands
- Ursula KempWitches · St Osyth, Essex
- Vale of York HoardLost treasure · Near Harrogate, North Yorkshire
- VerulamiumRoman Britain · St Albans, Hertfordshire
- Victoria CaveCave or grotto · Near Settle, North Yorkshire
- VindolandaRoman Britain · Near Bardon Mill, Northumberland
- Vinegar HillBattlefield · Enniscorthy, County Wexford
- W.B. Yeats's GraveMysterious grave · Drumcliffe, County Sligo
- Wade's CausewayRoman Britain · Wheeldale Moor, North York Moors
- Wade's StoneHill figure · East Barnby, near Whitby, North Yorkshire
- Waden Hill DumbbellCrop circle · Waden Hill, Avebury, Wiltshire
- Wainhouse TowerTower or folly · Halifax, West Yorkshire
- Ware Farm WheelCrop circle · Ware, near Lyme Regis, Devon
- WarminsterUFO case · Cradle Hill, Wiltshire
- Wayland's SmithyLegend · Near Uffington, Oxfordshire
- Wayland's Smithy KnotCrop circle · Near Ashbury, Oxfordshire
- West EndLost village · Thruscross Reservoir, North Yorkshire
- West Kennet Long BarrowAncient monument · Near Avebury, Wiltshire
- Westbury CaveBigfoot & Hominids · Westbury-sub-Mendip, Somerset
- Westbury White HorseHill figure · Bratton Downs, Wiltshire
- Westbury White Horse CirclesCrop circle · Bratton Downs, Wiltshire
- Western Approaches HQSecret site · Derby House, Liverpool
- Wharram PercyLost village · Yorkshire Wolds, North Yorkshire
- Whitby AbbeyCastle or abbey · Whitby, North Yorkshire
- White Scar CaveCave or grotto · Ingleton, North Yorkshire
- White Sheet HillCrop circle · Near Mere, Wiltshire
- White WebbsPlot · Enfield, London
- Whiteleaf CrossHill figure · Near Princes Risborough, Buckinghamshire
- Wicklow GaolExecution site · Wicklow
- William BuryExecution site · Dundee
- William of Orange's LandingPlot · Brixham, Devon
- Wilton Windmill CircleCrop circle · Wilton, near Marlborough, Wiltshire
- Wimborne RingCrop circle · Near Wimborne Minster, Dorset
- Windmill HillAncient monument · Near Avebury, Wiltshire
- Windmill Hill Triple Julia SetCrop circle · Near Avebury, Wiltshire
- Winter's GibbetExecution site · Steng Cross, near Elsdon, Northumberland
- Wistman's WoodUnexplained · Near Two Bridges, Dartmoor
- Woodchester MansionHaunted place · Nympsfield, Gloucestershire
- WoodhengeAncient monument · Near Amesbury, Wiltshire
- Wookey Hole WitchUnexplained · Wookey Hole, Somerset
- Worth Matravers RadarSecret site · Worth Matravers, Dorset
- Wroxeter Roman CityRoman Britain · Near Shrewsbury, Shropshire
- Wyatt's RebellionPlot · Allington Castle, near Maidstone, Kent
- Wythburn and ArmbothLost village · Thirlmere, Cumbria
- Y PigwnRoman Britain · Near Trecastle, Powys
- York Cold War BunkerSecret site · Holgate, York