Castelmur Castle

Castelmur Castle is a castle in the village of Bondo in the municipality of Bregaglia of the Canton of Graubünden in Switzerland. It is a Swiss heritage site of national significance. The fortifications at Castelmur may be, after the Three Castles of Bellinzona, the most important example of medieval valley fortifications in modern Switzerland.

Source: Wikipedia (CC BY-SA 4.0) — https://en.wikipedia.org/wiki/Castelmur_Castle_(Bondo)