Bunker 356 is part of the Neckar-Enz-Stellung, a defensive line built by Nazi Germany during World War II along the Neckar and Enz rivers. This fortification system was constructed in 1935 as part of Germany's rearmament efforts in violation of the Treaty of Versailles. The bunker represents the extensive network of defensive structures created to protect southern Germany from potential Allied advances.
Located in Baden-Württemberg, this military installation exemplifies the strategic importance of the region during the war.