Just outside Killala lies the ruins of Moyne Abbey, a Franciscan Friary, which is now a National Monument.
Historical buildings are dotted along Killala bay, including the Dominican Priory 'Rathfran Abbey' dated 1274 AD, Moyne Abbey, Meelick Castle, and Humbert's Rock.
Located on the River Moy, in North Mayo, close to Moyne Abbey and between the towns of Killala and Ballina, Rosserk Friary is possibly the best preserved monastic site in Ireland. It was founded by the Joyce family in the middle of the 15th century for the benefit of the Franciscan Third Order Friars, an order which incorporated laymen into the order as well as female clerics, though Rosserk’s religious community was male only.
Ballintubber Abbey has the unique distinction of being in almost continuous use for 800 years, having been founded in 1216. Beside the beautiful stone-built church its ruins and cloisters are good examples of Romanesque architecture. Ballintubber Abbey is the starting point of the ancient pilgrim’s route, known as ‘Tóchar Phádraig’ which passes through Aghagower en route to Croagh Patrick.