Penmon Priory, Cross and St Seiriol’s Well

Early Christian monastic landscape on Anglesey with medieval priory remains, ancient crosses and St Seiriol’s holy well. The site is in Penmon, Isle of Anglesey, Wales. The site has early medieval origins and later developed as an Augustinian priory.

Substantial medieval church and monastic remains survive. Penmon preserves several layers of Welsh Christian heritage: an early monastic foundation traditionally associated with St Seiriol, medieval priory buildings, important early stone crosses and the nearby holy well. Cadw dates the monastic tradition to the early medieval period and the later Augustinian priory to the Middle Ages.

The well’s reputation for healing belongs to devotional tradition. Together the church, crosses, priory remains and well form an unusually concentrated sacred landscape on Anglesey. St Seiriol’s Well has a longstanding reputation in local religious tradition for healing; the attribution is a sacred tradition rather than a clinical claim.

Today the surviving fabric is encountered primarily as a heritage site rather than a functioning monastic community. Opening conditions, conservation work and access can change, so the managing heritage authority should be consulted before travel.