This site contains the substantial remains of Lough Erne\'s most important island monastery. St Molaise founded it in the 6th century on an historic pilgrim route to Croagh Patrick. It later became an Augustine Priory of St Mary. The remains include a Romanesque church and a 12th century round tower, crosses and the Priory Church. Visitors can climb the islands most striking feature, the perfect round tower, which is 30 metres tall.