Ouvrage Schoenenbourg

Ouvrage Schoenenbourg is a Maginot Line fortification. It is located on the territory of the communes of Hunspach, Schœnenbourg and Ingolsheim, in the French département of Bas-Rhin, forming part of the Fortified Sector of Haguenau, facing Germany. At the east end of the Alsace portion of the Maginot Line, its neighbour is the gros ouvrage Hochwald. It is the largest such fortification open to the public in Alsace.

Source: Wikipedia