It is estimated to have been built between 9th and 12th centuries. At the beginning, there was found a Rome Bath but then it was demolished. During the Latin Invasion, the Catholic Crusaders seized that church and carved the wall of it by writing the name of Saint Francesco, the founder of Franciscan religion sect. In addition the first frescos were established here for the sake of him. Today those fascinating frescos were kept and displayed in the Istanbul Archaeology Museum.