Saint Mary's Cathedral

"Building is much newer than that, but still contains a 12th-century Romanesque doorway, a pre-Reformation stone altar, and a huge stone slab said to be the coffin lid of Donal Mor O'Brien's grave." Full review

"Parts of the 12th-century Romanesque western doorway, nave and aisles survive, and there are splendid 15th-century black-oak misericords (for supporting 'clerical posteriors') in the Jebb Chapel" Full review

"The city's oldest religious building. Once a 12th-century palace—pilasters and a rounded Romanesque entrance were part of the original structure—it dates mostly from the 15th century." Full review