The ruins of the monastery founded in the 7C by St Colman, son of Duagh, straddle the road. Glebe House, built in the 13C, is a two-storey building, and was most probably used as the abbot's abode. To the south, the small 12C Church of St. John the Baptist has rounded and pointed windows and a later chancel. The cathedral is striking with its different architectural styles. St. Mary's Church, across the road, dates back to approximately 1200.