Other notable headquarters are the Wolfsschanze (Wolf's Lair) in East Prussia, where Claus Graf von Stauffenberg in league with other conspirators attempted to assassinate Hitler on 20 July 1944, and Hitler's private home, the Berghof, at Obersalzberg near Berchtesgaden, where he frequently met with prominent foreign and domestic officials.
Hitler actually spent very little time in Berlin during the war, and the dwellings he most frequently used were the Berghof and the Wolfsschanze, spending more than 800 days at the latter.
The Fuhrerhauptquartiere programme used over one million cubic metres of concrete, more than half at Anlage Riese and Wolfsschlucht II.
Nevertheless, because Hitler directly controlled much of the German war effort, the FHQs more often than not became de facto military headquarters.
[3] The "Eagle's Nest", i.e. the Kehlsteinhaus, was rarely used and may not be considered a FHQ as such alone; however, it was associated with the Berghof and part of the Obersalzberg military complex.