Church of Agia Sofia
Monemvasia Municipality, Greece · built 1200
The Church of Hagia Sophia (Ἁ, Hagía Sophía, lit. 'Holy Wisdom' Ancient Greek pronunciation: [aˈʝia soˈfia]) or Holy Wisdom is a Byzantine church in the medieval town of Monemvasia, Peloponnese, southern Greece. It forms part of the wider archaeological site of Monemvasia. It was built on the upper town of Monemvasia, and was originally dedicated to Panagia Hodegetria ("Virgin Mary Who Points the Way"). It is the most important monument of Monemvasia. The Venetians, who held Monemvasia for some time, used it as a Catholic church dedicated to Madonna, while during the Ottoman period it was converted into a mosque before being finally restored to Christian worship upon Greece's independence in the early nineteenth century.
Mosque data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).