Church of the Virgin of the Pharos
Istanbul, Turkey · built 701
The Church of the Virgin of the Pharos (ῦ, Theotokos tou Pharou) was a Byzantine chapel built in the southern part of the Great Palace of Constantinople (today Istanbul Turkey), and named after the tower of the lighthouse (pharos) that stood next to it. It housed one of the most important collections of Christian relics in the city, and functioned as the chief palatine chapel of the Byzantine emperors.
Church data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).