In "Misr Adima " (Old Cairo) stands the Eliahu (or Ben Ezra) synagogue, where the Karaite scrolls were found: writings that have been linked to the Dead Sea scrolls and the monks who copied them at the Dead Sea monastery of Qumran in Palestine. This is, according to tradition, the site of the "Moses in the bulrushes" story (Exodus 2). In defense of the claim, the Nile did in those times run further east than it does now, and this place did lie alongside the east bank of the river.
Here, too, is the Church of Abu Sarga (St. Sergius), 4th or 5th century C.E., according to Coptic tradition, where the baby Jesus' family stopped during their flight from Herod's tyranny in Judea. The church sits atop one of the oldest foundations of ancient Babylon.
The Church of al-Adra (Church of "the Virgin"), built in the seventh century, and also called al-Mu'allaqa ("the hanging church"), stands on top of the remains of the southern gate, towers, and walls of old Babylon, as the Persians named it and as it was known to the Greeks and Romans (from 500 bce). One can descend via steps beneath the church to view some of the oldest remains of the city.