Rudelsburg

The Rudelsburg is a ruined hill castle located on the east bank of the river Saale above Saaleck, a village in the borough of Naumburg in the county of Burgenlandkreis in Saxony-Anhalt, Germany. The Rudelsburg was built in the Middle Ages by the Bishop of Naumburg and served to secure trade routes such as the Via Regia through the Saale Valley. (Wikipedia)