Cairo or Al-Qahera by Arabic which means 'The Triumphant City' was finally named and founded in AD 969. Cairo is a large city, bearing about 22 million inhabitants, so considered to be the largest city in Africa. Cairo is a complex blend of different civilizations and therefore is unique to live in. Greater Cairo extends on the banks of the River Nile to the south of the Delta of the River Nile. Cairo bares a significant, flourishing historical background that starts from the Pharaonic period passing through the Greco-Roman, Jewish, and Coptic, till the Islamic period. It was here that the Virgin Mary and the Child Jesus rested after their long journey from Palestine, and that the first Islamic mosque in Africa was built by Amr Ibn Al-3as. Cairo is at least twice as old as Paris, 7 times as old as Berlin, and 15 times as old as New York City.