Isenburg

Isenburg - Credit: Wikimedia Commons

The Isenburg is a ruined castle in the Western Ore Mountains between Hartenstein and the village of Wildbach in the town of Aue-Bad Schlema. It sits high above the valley of the Zwickauer Mulde in Saxony. Read more on Wikipedia

type: military structure
date from: 12th century

Source: en.wikipedia.org