Veste Coburg (fortress) built
1225 CE.
Shown on the map at 50.264°, 10.981°.
The Veste Coburg (Coburg Fortress) is one of the best-preserved medieval fortresses of Germany. It is situated on a hill above the town of Coburg, in the Upper Franconia region of Bavaria.
Text from the Wikipedia article Veste Coburg, licensed CC BY-SA 4.0.