Christ Church Cathedral
Christchurch Cathedral was founded in 1028 and is often known as the spiritual heart of the city, due in part to its impressive architecture and fascinating history. Even for those who would not consider themselves to be especially religious, the Cathedral houses a number of interesting artefacts such as the tomb of Strongbow and the longest crypt in Britain and Ireland. As well as regular services, visitors can also take guided tours and even try their hand at bell ringing.
For more information and tickets you can visit http://www.christchurchdublin.ie