Built on a rocky east-west crest, the castle dominates the route between Oberlag and Levoncourt. It is constructed from Jurassic limestone with a lime mortar. The northern building, measuring 51 by 7.5 m (~170 by 25 ft) has an underground semi-circular vaulted cellar running the full length and the remains of two spiral staircases. The southern building consists of a polygonal staircase tower as well as remains of pointed-arch vaulting and a fireplace. The tower in the north west corner has oven-shaped vaulting. The southern artillery tower has three vaulted casemates: its cannon openings are set to fire horizontally, with one covering the entrance. The north east tower, built in 1515 has been restored and the present entrance to the cellar through the curtain wall is not original.