Tecklenburg Castle - Credit: Wikimedia Commons
Tecklenburg Castle (), or simply the Tecklenburg, is a ruined castle and venue for the Tecklenburg Open-Air Theatre in the eponymous town of Tecklenburg in the county of Steinfurt in the state of North Rhine-Westphalia, Germany. It was once the seat of the rulers of the County of Tecklenburg. Read more on Wikipedia
Source: en.wikipedia.org