The Ben Ezra Synagogue (Hebrew: בית כנסת בן עזרא, Arabic: معبد بن عزرا), sometimes referred to as the El-Geniza Synagogue (Hebrew: בית כנסת אל גניזה) or the Synagogue of the Levantines (al-Shamiyin), is situated in Old Cairo, Egypt. According to local tradition, it is located on the site where baby Moses was found. The land for the synagogue was purchased in 882 CE for 20,000 dinars by Abraham ibn Ezra (who might be the famous Abraham ibn Ezra) of Jerusalem.
This was the synagogue whose geniza or store room was found in the 19th century to contain a treasure of abandoned Hebrew secular and sacred manuscripts. The collection, known as the Cairo Geniza, was brought to Cambridge, England at the instigation of Solomon Schechter and is now divided between several academic libraries.
^"Finally, there is the Ben Ezra Synagogue, with its cool marble floors. Lore has it that the Nile once flowed up behind the synagogue, and there, in the reeds, baby Moses was hidden." Slackman, Michael. "36 Hours in Cairo", The New York Times, February 3, 2008.