The Kehlsteinhaus (known as the Eagle's Nest in English-speaking countries) is a Third Reich-era building erected atop the summit of the Kehlstein, a rocky outcrop that rises above the Obersalzberg near the town of Berchtesgaden. It was used exclusively by members of the Nazi Party for government and social meetings. It was presented to Adolf Hitler on his 50th birthday, but he only visited the building a total of 14 times. Today it is open seasonally as a restaurant, beer garden, and tourist site.

The Kehlsteinhaus is situated on a ridge atop the Kehlstein, a 1,834 m (6,017 ft) subpeak of the Hoher Göll rising above the town of Berchtesgaden. It was commissioned by Martin Bormann in the summer of 1937 as a 50th birthday gift for Adolf Hitler. Paid for by the Nazi Party, it was completed in 13 months but held until a formal presentation on April 20, 1939. A 4 m (13 ft) wide approach road climbs 800 m (2,600 ft) over 6.5 km (4.0 mi). Costing RM 30 million to build (about 150 million inflation-adjusted euros in 2007), it includes five tunnels but only one hairpin turn.