Saladin al-ayobi's castle Saladin ordered the construction of a castle on top of Mount Mokattam in a place known as the Dome of the Air. But he did not complete it in his life, and it was completed by Sultan Al-Kamil bin Al-Adil. The first person to inhabit it was "King Al-Kamil" and he made it a royal residence. This continued until the reign of Khedive Ismail.

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Abu Seifin Church The Church of Saint Mercurius is a Coptic Orthodox church located north of Babylon Fort in ancient Egypt, among a group of important churches. Within the area known as Deir Abu Sefein, there are three churches and a monastery. One of these churches is dedicated to Saint Mercurius, and it is the largest in the ancient Babylonian region. The church was named after Saint Philopateer Mercurius, nicknamed Abu Seifin

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