Coptic Cairo is the main place people go to see churches in Cairo, but there are plenty of other churches around the city.
Fortress of Babylon:
Greek Orthodox Church of Mar Girgis
Greek Orthodox Church of the Virgin
Church of the Virgin of the Pot of Basil
Abu Sarga (Church of Saints Sergius and Bacchus)
Abu Sayfayn Complex:
Churches south of the Babylon Fortress:
Church of the Archangel Michael
Harat Zuwayla:
Church of the Virgin Who Melted Iron and the Church of St. George
Al-Ghuri:
Harat al-Rum:
Fumm al-Khalig:
Maadi: