In continuous occupation since its establishment in 1204 AD, Dublin Castle has played a prominent role in Ireland's history.The State Apartments are among the most prestigious State Rooms in the country and are home to St. Patrick's Hall and the James Connolly Room. They can be visited both as part of a guided tour and as part of a self guided visit. The thirteenth century remains of the Gunpowder Tower and the 19th Century baroque style Chapel Royal can also be visited as part of the Guided Tour.