Dokumentationszentrum Obersalzberg (Obersalzberg Center of Documentation) is a museum, erected on the groundwork of the former Nazi guesthouse in order to supply historical information concerning the use of the Obersalzberg by Nazi leaders, especially Adolf Hitler who regularly vacationed in this area beginning in 1928. The museum was opened in 1999, and by 2007 had been visited by more than one million people.
Obersalzberg is located near Berchtesgaden, Bavaria, Germany, close to the Austrian border. The museum is near the location where Adolf Hitler had his Berghof (Mountain House). The museum building sits on the foundation of the Nazi Guesthouse, and there is also a link through a tunnel to the Nazi bunkers inside the Obersalzberg, constructed 1943-1945.

The museum exhibition offers over 950 documents, photographs, audio clips, films and maps as well as a scale model of the Obersalzberg area overlaying current buildings with the position of historical Nazi installations. The exhibition covers the two floors of the main building and extends through the tunnel to the bunker. However, only a portion of it is dedicated to the history of the Obersalzberg, including a small section on the post-1945 era, when most of the area was used by the American military. The ground floor of the main building and most of the tunnel exhibits cover general topics such as "The Fuehrer", "Actors in the regime", "Machinery of Terror", "Resistance", "Foreign Policy" etc. that are not directly related to the area of the Obersalzberg. Only a part of the extensive bunker network is accessible today.
The upper floor of the exhibition area

There are also special exhibitions. The 2008 Winter Exhibition was about "Free time in Fascism". From October 2012 to April 2013, the museum showed an exhibition on the victims of euthanasia.