Description: The only fortress in Syria built on the same level as the city, it does not top a hill or a mountain like all other castles and citadels. It was erected by the Seljuks in 1078 A.D. with masonry taken from the city wall, and turned into a heavily-fortified citadel surrounded by walls, towers, a moat and trenches. Inside, they built houses, baths, mosques, and schools; it was a city within a city. At the height of Crusader raids and attacks, it was used as residence for the sultans of Egypt and Syria such as Nureddin, Saladin, and al-Malek al-Adel,whence they supervised military operations against the Crusaders.