The western end of the nave in the Cistercian Abbey of Corcomroe, County Galway, Ireland. The east end of the building is distinguished by the high quality of its stonework but before the work progressed beyond the transepts a serious deterioration in quality occurred and in the middle-ages the church was shortened by an intrusive wall, surmounted by a bell turret, and at the same time the roofs and upper walls were extensively remodelled.