Saaleck Castle is a hill castle near Bad Kösen, now a part of Naumburg, Saxony-Anhalt, Germany.

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.