Obersalzberg is a mountainside retreat situated above the market town of Berchtesgaden in Bavaria, Germany. Located about 120 kilometres (75 mi) south-east 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 era 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.

Berchtesgaden is a municipality in the district Berchtesgadener Land, Bavaria, in southeastern Germany, near the border with Austria, 30 km (19 mi) south of Salzburg and 180 km (110 mi) southeast of Munich. It lies in the Berchtesgaden Alps. South of the town, the Berchtesgaden National Park stretches along three parallel valleys.