2. Wolf's lair - WolfsschanzeGierloz Wolf's Lair was Adolf Hitler's first Eastern Front military headquarters in World War II. The complex, which became one of several Führerhauptquartiere in various parts of eastern Europe, was built for the start of Operation Barbarossa – the invasion of the Soviet Union – in 1941. It was constructed by Organisation Todt.The top secret, high security site was in the Masurian woods about 8 km east of the small East Prussian town of Rastenburg . Three security zones surrounded the central complex where the Führer's bunker was located. These were guarded by personnel from the SS Reichssicherheitsdienst and the Wehrmacht's armoured Führerbegleitbrigade. Despite the security, the most notable assassination attempt against Hitler was made at the Wolf's Lair on 20 July 1944.Hitler first arr... From Wikipedia, the free encyclopedia.