The Church of Ireland St Patrick's Cathedral occupies the hilltop where Saint Patrick established his principal church in the 5th century, making it one of the oldest continuously sacred sites in Ireland. The current building is mostly the result of a major Victorian restoration in the 1830s, though medieval fabric survives and the crypt contains stonework that predates the Norman conquest.
The cathedral is austere inside in the best Irish Protestant tradition — spare, grey, and dignified — with some fine medieval carvings and memorials. The hill on which it stands gives excellent views over the city and across to the Catholic cathedral on the facing hilltop, the unusual twin-cathedral skyline that defines Armagh's silhouette.
Brian Boru, the High King of Ireland who defeated the Vikings at the Battle of Clontarf in 1014, was buried here at his own direction. His grave is marked in the north wall of the nave. The cathedral is open to visitors daily; donations welcome.