The exterior facade of the Church of Saint George (Mar Girgis) in Old Cairo (Misr El Qadima), built in a circular Greco-Roman architectural style using light limestone. A prominent carved relief panel set within a rounded arch depicts Saint George on horseback slaying the dragon, a central symbol of the Coptic Orthodox and Greek Orthodox traditions in Egypt. The church, which stands on the site of a Roman tower in the ancient fortress of Babylon, is one of the oldest Christian landmarks in Cairo and a major pilgrimage site for Coptic Christians.