The church of St. Barbara is among the churches of Old Cairo of historic importance. It was originally dedicated to St. Cyrus and St. John who were worshipped for their healing powers. A small church at the northeastern corner of the building commemorates these two martyrs. Documents from the 13th century mention that the relics of St. Barbara were kept in this church. Many of its precious items, like two door panels, a wooden screen, an icon and Bible caskets were transferred to the nearby Coptic Museum. The basilican structure and tripartite sanctuary of the church closely resembles the one of Abu Sarga. The church of St. Barbara houses some of the rarest icons.