Dokumentation Obersalzberg is a historical museum located in the town of Berchtesgaden, Germany. The museum is dedicated to documenting the history of the Obersalzberg area, which was once the site of Adolf Hitler's mountain retreat. The museum features a wide range of exhibits, including photographs, documents, and artifacts from the Nazi era. Visitors can explore the underground bunkers and tunnels that were built by the Nazis, as well as view a collection of propaganda films and speeches. The museum also offers guided tours of the surrounding area, including the Eagle's Nest, a former Nazi meeting place that offers stunning views of the surrounding mountains. Overall, Dokumentation Obersalzberg provides a fascinating glimpse into one of the darkest periods of German history, and is a must-visit destination for anyone interested in World War II and the Nazi regime.