St Seiriol's Well
Penmon, Anglesey
St Seiriol founded a religious community at Penmon in the 500s. His holy well lies in a small stone building beside the ruins of the later priory, and the foundations of what may be his cell sit next to it.
Read the full story, see it on the map, get directions and find what else is nearby in the free Hidden Britain Atlas map.
- When
- 500s
- Where
- 53.3050, -4.0600
- Group
- Holy wells & springs
Visiting
Cadw, free. A small toll road leads to Penmon Point.

The Ledger of Lost Britain
The Romans arrived in AD 43. For most people that is where the history of Britain begins. But by the time the legions landed, people had already been living on these islands for thousands of years. They had hunted, farmed, mined flint, dragged stones across the country, raised a hill by hand, and buried their dead in great tombs. They left no written words. What they left was the ground itself. Every place in this book can be visited, or has been dug up, or is in a museum.
Nearby mysteries
- The Rothesay CastleShipwreck · Off Puffin Island, Anglesey · 1 mile away
- Beaumaris CastleCastle or abbey · Beaumaris, Anglesey · 3 miles away
- Beaumaris GaolExecution site · Beaumaris, Anglesey · 3 miles away
- The Witches of LlanddonaWitches · Llanddona, Anglesey · 3 miles away
- HMS ConwayShipwreck · Menai Strait, Anglesey · 8 miles away
- The Royal CharterShipwreck · Moelfre, Anglesey · 8 miles away