Château de Ramstein, Medieval castle ruins in Scherwiller, France

Château de Ramstein is a ruined hilltop castle on a rocky outcrop at 384 m, about 300 m southwest of Ortenberg Castle above Scherwiller. Of the late 13th-century complex, parts of the north and east walls of the three-storey residential tower survive, built of rubble stone, smooth ashlar and granite corner blocks, with a fireplace base visible inside. Sections of the lower-court ring wall and the 15th-century outer wall with half-round towers remain.

The castle is first mentioned in 1293, when the bailiff Otto IV of Ochsenstein built a fortification near Sélestat against the will of many. It passed to the Habsburgs by 1303 and later to the Counts of Württemberg. In 1421 Strasbourg troops took and sacked it during the Dachstein War, but it was rebuilt and remained inhabited until a Swedish fire destroyed it in 1633.

The name combines Ram, from Rabe (raven), and Stein (rock), meaning "raven's rock", a name recorded in 1293 before the castle. The site is closed to visitors since 1983 because of collapse risk, so the ruins are seen from outside. Since 2009 the local group Les veilleurs du Ramstein has carried out continuous securing work.

Access to the interior of the castle ruins is typically restricted for safety, but the exterior can be viewed from the surrounding area. Good footwear is recommended since the terrain is hilly and uneven.

The idea that Ramstein was a siege castle with a crossbow platform was argued by Charles-Laurent Salch in 1978, but Olaf Wagener showed in 2005 that a tower crossbow there could not reach Ortenberg. Most studies since 2008 reject the siege-castle theory. The castle was listed as a monument historique on 1 July 1924.