Hagia Sophia Church, Nesebar
Nesebar, Bulgaria · built 501
Hagia Sophia Church (Medieval Ἁ, Naós Hagías Sophías, "Church of Holy Wisdom"), also known as the Church of Saint Sofia (Bulgarian: „ “, cǎ́rkva "Sveta Sofiya") and the Old Bishopric (Bulgarian, Starata mitropoliya) is an Eastern Orthodox church in Nesebar, eastern Bulgaria. It is situated in the old quarter of the town which is part of the UNESCO World Heritage Site list and of the 100 Tourist Sites of Bulgaria.
Church data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).