Obersalzberg

Obersalzberg is a mountainside retreat situated above the market town of Berchtesgaden in Bavaria, Germany. Located about 120 kilometres southeast of Munich, close to the border with Austria, it is best known as the site of Adolf Hitler's former mountain residence, the Berghof, and of the mountaintop Kehlsteinhaus, popularly known in the English-speaking world as the "Eagle's Nest." All of the Nazi buildings were demolished in the 1950s but the relevant past of the area is the subject of the Dokumentationszentrum Obersalzberg museum which opened in 1999.

The name of the settlement area derives from the rock salt deposits in the former Prince-Provostry of Berchtesgaden. Salt mining at Pherg is documented since the 12th century and a major salt mine opened in 1517. It was destroyed in 1834 but rebuilt and named the "Old Salt Works". The rectangular layout and some components still exist.

Wikipedia