Expression of Arabian architecture with the Zisa, which was built by Moorish craftsmen daytime residence of the Norman King William II in 1180. Added also like the Zisa in the park Genoardo that surrounded the city, it appeared once surrounded on three sides by an artificial lake. The structure is square, with the sides of the blind windows and the center of each side, the projections in the form of towers, one of these projections, the connection of Cuba to the mainland. Within a single environment, a pool of rainwater harvesting, niches and decorated in Arabic style, the muqarnas.