OB 15cm Geschütz is a German-built coastal artillery bunker located in Normandy, France. Constructed during World War II as part of the Atlantic Wall defenses, this fortified position housed a 15cm naval gun designed to defend the French coastline against Allied naval forces. The bunker exemplifies the extensive military engineering undertaken by Nazi Germany to fortify occupied territories against potential invasion.
The structure features thick reinforced concrete walls typical of German Regelbau designs, providing protection for the gun crew and ammunition stores. Its strategic location along the Normandy coast made it part of the formidable defensive network that would later face the Allied landings on D-Day in June 1944. Today, the bunker stands as a historical monument to the military architecture of the Second World War.