Mangalia Mosque built
1575 CE.
Shown on the map at 43.810°, 28.583°.
Esmahan Sultan Mosque (Romanian: Moscheea Esmahan Sultan) is the oldest mosque in Romania. Located in Mangalia, Constanța County, it serves a community of 800 Muslim families, most of them of Turkish and Tatar ethnicity.
Text from the Wikipedia article Esmahan Sultan Mosque, licensed CC BY-SA 4.0.