Amr bin Al-Aas Mosque.
Amr bin Al-Aas Mosque. It was built in the city of Fustat, which was founded by Muslims in Egypt after its conquest. It was also called Al-Fath Mosque, Al-Atiq Mosque, and Taj Al-Jami’.

Saint George Church
Saint George Church It was built in the 10th century on top of the Roman tower of the Babylon Fortress. The church is linked to the Monastery of St. George. The church is the seat of the Pope and Patriarch of the Greek Orthodox Church of Alexandria. The current structure was rebuilt after a fire in 1904, construction finished in 1909. Since 2009, the hegumen of the monastery has had the rank of bishop with the title of Bishop of Babylon ("Bishop of Babylon").

The Hanging Church
The Hanging Church was given this name because of its location at the top of the southern tower gate of the ancient Babylon Citadel (in Old Cairo) with its nave hanging over the corridor, and because it was built on two towers in the Roman fort of Babylon. The two towers were connected to each other with a palm stalk, then the church was built above them, and each tower takes the form of Horseshoe, and the construction of the fort dates back to the second century AD