Château de Hunebourg

Château de Hunebourg is a rock castle that lies to the west of Neuwiller-lès-Saverne in the French département of Bas-Rhin on a 425-metre-high sandstone rock outcrop. It is accessible from the valley of the Zinsel du Nord. The original castle was built in the 12th-13th century, but very little remains from this period. The castle was reconstructed in a neo-romanesque style in the 1930s. It is a listed historical monument since 2007.

Source: Wikipedia