Alt-Trauchburg Castle

The ruins of Alt-Trauchburg Castle, also called the Alttrauchburg or Trauchburg, lie above the Weitnau hamlet of Kleinweiler in the county of Oberallgäu in Swabia. Large parts of the original stone walls of the high- to post-medieval castle remain. The ruins are some of the best preserved in the Allgäu region of Germany.

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