Step into one of Ireland's most historic buildings, St Patrick's, the magnificent National Cathedral of the Church of Ireland. You'll be surrounded by stunning Gothic architecture and over 800 years of history, standing on a site where St. Patrick himself is said to have baptized converts. Don't miss the chance to visit the grave of Jonathan Swift, the author of Gulliver's Travels, who was once the dean here. There's an admission fee to enter, but it's well worth it for the experience of this iconic Dublin landmark and you can also visit Marsh's Library next door with a dual ticket.