The synagogue of Ben-Ezra lies to the east of the Church of Saint Sergius and Bacchus and near Saint Barbara’s. It was originally a Coptic church but was sold to the Jews when Ahmed Ibn Tulun extorted money from Patriarch Micheal III. It is the oldest synagogue in Cairo, in which the Geniza archive, a collection of Jewish documents, was found. These documents are very valuable for the history of the Jews and of Egyptian Red Sea trade during the Middle Ages. The architectural design of the church can no longer be detected.
