Château d'Ochsenstein, Rock castle in Reinhardsmunster, France.

Château d'Ochsenstein consists of three separate stone structures built atop sandstone outcrops high in the Vosges Mountains. The buildings occupy multiple rock spurs and formed a coordinated defensive system in the medieval landscape.

The castle was probably built in the late 12th century; a lord of Ochsenstein is first mentioned in 1187, and the name appears in 1186. In 1217 Otto I divided his lands among his sons, and the site already comprised several structures. In 1284 and 1382 parts were besieged and destroyed, then rebuilt. A fire in the 16th century ended reconstruction, leaving the ruins.

The name refers to its location on sandstone outcrops, where medieval nobles displayed their authority over the region. Today the ruins show how important this position was for controlling mountain passages.

From Saverne, take the D171 then the forest road via Schæferplatz to the Haberacker farms. A forest path marked with a blue rectangle (GR 531) leads up to the ruins in about 20 minutes, with a 110-metre climb. The site is free and open at all times.

A fire in 1560 damaged the castle significantly during reconstruction efforts. In the following centuries it was systematically used as a stone quarry, which explains its current fragmentary state.