Dublin Castle is located in Dublin, Ireland. The castle complex serves as a major Irish Government center and a tourist attraction. The castle was built for defense by King John of England and was largely completed by 1230. The castle was designed in a Norman courtyard style with a central square, flanked by defensive walls that were protected at each corner with a circular tower. Through the middle ages, the castle’s structure was altered with additions added, although not all the additions remain today. The castle survived a fire in 1684 and was transformed into a Georgian palace. The majority of the medieval buildings remain under ground today with the exception of the Record and Bermingham Towers, which are the sole surviving towers from the original fortification. The castle boasts State apartments in the upper yard buildings, a Throne room, a State drawing room, a State dining room, State bedrooms, a State corridor, and Saint Patrick’s Hall, which was once a ballroom, but is currently used for presidential inaugurations. The opulent Royal Chapel was completed in 1814 and opened on Christmas Day. The chapel was the third chapel in the castle and the second in this location. The crypt of the Royal Chapel is now used as an art center. The Chester Beatty Library houses the Silk Road Café, while the Treasury Building houses a police museum. Dublin Castle is open to the public.