This location is in a Fortress named the Fortress of Babylon. Its foundation is in the site where we stand today. Within the fortress are a lot of churches and other buildings: Abu Sarga, the Church of the Virgin Mary, the Church of Saint Barbara the Martyr, Mar Girgis (Coptic), The Hanging Church, The Church of the Monk Mar Girgis, the Fortress of Babylon, The Greek Orthodox Church Mar Girgis, the Coptic Museum and the Ben Ezra Synagogue.

the Most and Biggest mosques in Cairo which is El Sultan Hassan Mosque that also known as `Madrasa El Sultan Hassan` that was founded by Sultan Hassan in 1356 A.D The Mosque-Madrassa of Sultan Hassan is a massive Mamluk era mosque and madrassa located near The Citadel in Cairo. Its construction began 757 AH/1356 CE with work ending three years later “without even a single day of idleness”. At the time of construction the mosque was considered remarkable for its fantastic size and innovative architectural components. Commissioned by a sultan of a short and relatively unimpressive profile, al-Maqrizi noted that within the mosque were several “wonders of construction”. The mosque was, for example, designed to include schools for all four of the Sunni schools of thought: Shafi’i, Maliki, Hanafi and Hanbali

Al-Azhar Mosque in Cairo it`s also known as the mosque of the most resplendent is a mosque in Islamic Cairo in Egypt.Al-Mu'izz li-Din Allah of the Fatimid Caliphate commissioned its construction for the newly established capital city in 970. Its name is usually thought to allude to the Islamic prophet Muhammad's daughter Fatimah, a revered figure in Islam who was given the title az-Zahrā .the shining or resplendent one.It was the first mosque established in Cairo,a city that has since gained the nickname "the City of a Thousand Minarets