Donaustauf Castle - Credit: Wikimedia Commons
Donaustauf Castle () is a ruined hill castle located at a height of on a hill spur overlooking the River Danube by the market village of Donaustauf in the Upper Palatine county of Regensburg in the south German state of Bavaria. Donaustauf grew up during the Middle Ages under the protection of the mighty fortifications of the castle. Read more on Wikipedia
Source: en.wikipedia.org