Baghdad is distinguished by its cultural importance, which is represented by the presence of a large number of important monuments such as museums, historical schools, libraries and theaters. The city is famous for its Islamic monuments, which are the remnants of the city walls of Baghdad, the House of Caliphate, and the Al-Mustansiriya School. Old Baghdad has several names, such as the Round City, Al-Zawra, and Dar Al-Salam.