Führerhauptquartier Wolfsschanze
The decision was made in late 1940 to build Wolf's Lair in the middle of a forest, far from major roads and urban areas. The complex was completed by 21 June 1941 and consisted of three concentric security zones. About two thousand people lived and worked at Wolf's Lair at its peak, among them twenty women, some of whom were required to sample Hitler's food to test for poison.