Trianon Mosque
Nafplio Municipality, Greece · built 1540
The Trianon Mosque, also known as the Old Mosque is a former mosque in the town of Nafplio, in the Peloponnese region of Greece. Completed in the 16th century, during the Ottoman era, it is the oldest surviving example of Ottoman architecture in Nafplion. During Ottoman rule it was located in the Grand Vizier's quarter or the quarter of Sultan Ahmed, in the center of the town's market. The building was subsequently repurposed for profane use from c. 1823, including as a cinema and for cultural use.
Mosque data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).