The Ayyubid walls can be considered one of the most important monuments discoverd in Cairo in the ninties. It was established by Saladin to link between the Fatimid Cairo, the Citadel and the Aqueduct. The wall was discovered during the works of Al-Azahar Park. Amarvelous collection of gates, rooms and towers and other artifacts were discoverd. Blocks of the Pharaonic era, with hieroglyphic inscriptions used in the wall were also discoverd. The wall was 15 meters under the goround level.