The Kehlsteinhaus, known as the Eagle's Nest is a Third Reich-era building erected atop the summit that rises above the Obersalzberg. 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.
Look here for astonishing view from Eagle's Nest.
Lake Konigsee and St. Bartholomew
This small pilgrimage church is one of the most visited places in the Berchtesgadener Land region. Built on a spit of land beneath the famous east face of the Watzmann massif, it is set in one of the most beautiful lake districts in Bavaria. Today, most visitors or pilgrims approach this architectural jewel by taking one of the almost silent Lake Königssee electric motor boats across the lake.
The Obersee is a natural lake in southeast of Bavaria, near the Austrian border. All of the lake is within the Berchtesgaden National Park. It is located southeast of the much larger Königssee. The two lakes are separated through a moraine. There are no villages near the lake, the only dwelling being the small Fischunkelalm which is only occupied during the summer month.