 As Dublin Airport is located just outside the city, most international visitors to Ireland begin their stay here.Among the main attractions in Dublin are Dublin Castle, the seat of British rule in Ireland until 1922, Phoenix Park, one of the largest inner city parks in the world, The General Post Office, one of Ireland's most famous buildings due to the 1916 Easter rising, Kilmainham Gaol, a former prison turned museum that held and executed the rebels of the 1916 Rising and Trinity College, where the Book of Kells and the Book of Durrow are held.In 2010, Dublin was awarded the title of UNESCO City of Literature, as many famous writers such as James Joyce and Samuel Beckett are from the city.