Ouvrage Haut-Poirier

Ouvrage Haut-Poirier is a lesser work of the Maginot Line. The ouvrage consists of one entry and three infantry blocks, and is located between the Saare valley and petit ouvrage Welschhof, facing Germany. It is the only ouvrage in the Fortified Sector of the Sarre, the remainder of the area being covered by smaller blockhouses and areas of inundation. It was assaulted by German forces during the Battle of France and was captured after a seven-hour bombardment. Haut-Poirier is abandoned, although one of its satellite casemates is maintained as a museum.

Source: Wikipedia