Dublin Castle is a stunning eighteenth century building located in the heart of Dublin city. The castle served as a seat of the British government until 1922, and it was once the residence of the viceroy of Ireland.  One area of the castle well worth a visit is the impressive St. Patrick’s Hall, a huge ballroom where presidential inaugurations are held. Dublin Castle also features a beautiful throne room, which holds a throne dating back to the reign of King William III. The castle is found on the city’s southside and is located close to the busy shopping area of Grafton Street and the cultural heart of the city, Temple Bar.