This is a grim reminder of the thousands of Nazi slave workers who perished whilst building these bunkers, an enormous complex which covers an area of 2.5km. This was Adolf Hitler's main headquarters between September 1941 and September 1944. Hitler spent most of his days here, except for short visits to Berlin and Berchtesgaden. These concrete bunkers, with their 6 m thick walls were built by the dreaded Todt Organisation who's supervisors were notorious for their ill treatment of prisoners. During the German retreat in January 1945, they attempted to blow up the building, despite this there is still much to be seen today.
A twenty minute walk through dense woodland, which was well camouflaged with netting, making it invisible from the air, leads one to Führer Bunker No. 13, Hitler's personal quarters. Nearby is a plaque marking the spot where Hitler was nearly assassinated on July 20, 1944 by Colonel Claus von Stauffenberg (1907-1944).
The surface building where Hitler was nearly killed was only partially constructed of reinforced concrete, so that the full effect of the blast was diffused and Hitler survived.