The OB 2cm Flak is a German-built World War II anti-aircraft bunker located in France. This type of bunker was part of the Atlantic Wall fortifications constructed by Nazi Germany along the western European coast. The designation 'OB' stands for 'Objekt' (object), while '2cm Flak' refers to the 2-centimeter anti-aircraft artillery typically installed in such structures.
These bunkers were designed to protect against Allied air attacks and were strategically positioned along the French coastline during the German occupation.