Burg Lichtenstein, Medieval castle ruins in Dorste, Germany.

Burg Lichtenstein is a ruined hilltop castle on the 260.9 m Lichtenstein, a wooded hill between Förste and Dorste. Its circular mound, about 50 m across, is enclosed by a ring ditch and an outer rampart, giving a total diameter of about 90 m. The only stone remnant is a 9 m long, 4.5 m high and 1 m thick section of ring wall made of light gypsum stone on the north side.

Burg Lichtenstein was first documented in 1404 and 1406 as property of Duke Erich I of Grubenhagen. In 1439, after the knight Herwig von Utze raided Goslar, the castle was captured and burned, then rebuilt; a dispute over ownership between the dukes and the city of Goslar was settled on 7 April 1442 by arbitration of Osterode. It was pledged to various knights in the 15th century, and a 1567 document mentioning only the Lichtenstein forest suggests the castle no longer stood.

The castle was also called Silberburg because of the light gypsum stones of its outer wall. The name Lichtenstein appears in older spellings as Lechtensteyn and Lechtenstein. After the Thirty Years' War the ruin served as a hideout for the robber Hans Warnecke from Eisdorf.

The ruins are accessible via a marked hiking trail starting from Dorste village center that climbs uphill and takes about 45 minutes on foot. The paths are easy to walk when dry but can become slippery after rain.

The light gypsum stones of the outer wall gave the castle its earlier name, Silberburg (Silver Castle). The surviving stretch on the north side of the hill is 9 m long, 4.5 m high and 1 m thick, and wall foundations show it belonged to a ring wall around the whole mound.