Fenari Isa Mosque
Fatih, Turkey · built 901
Fenâri Îsâ Mosque (full name in Molla Fenâri Îsâ Câmîi), known in Byzantine times as the Lips Monastery (ὴ ῦ), is a mosque in Istanbul, made of two former Eastern Orthodox churches.
Church data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).