Burg Liebenstein, Medieval castle ruins in Plößberg, Germany

Burg Liebenstein is a ruined hilltop castle on a granite cone immediately north of the Liebenstein district of Plößberg in Bavaria's Tirschenreuth district. Only a few original foundation walls of the bergfried survive; since summer 2007, parts of the walls have been rebuilt. The site is listed as a Bavarian monument under file number D-3-77-146-24.

The castle was first recorded in 1125 and remained under the control of the Liebensteiner noble family until around 1298, when it was sold to Abbot Theoderich of Waldsassen. This sale marked the end of local noble rule and the beginning of ecclesiastical administration.

The castle was the seat of a judicial office before it was abandoned after 1634. Its name comes from the Liebensteiner family, who died out in 1292. The site is now a listed monument, and since summer 2007 parts of the walls have been rebuilt.

The site is reachable by transport connections to Plößberg and sits on a hill with views over the surrounding area. After restoration work beginning in 2007, parts of the ruins are accessible, but visitors should watch for uneven ground.

The granite cone beneath the ruins held several quarries, one directly below the castle itself, until the 1950s. Quarrying cut into the rock that had supported the medieval fortification, so the hill visitors climb today is partly a worked surface rather than a natural summit.