The Kehlsteinhaus (known as the Eagle's Nest in English-speaking countries) is a Third Reich-era edifice erected atop the summit of the Kehlstein, a rocky outcrop that rises near the town of Berchtesgaden. It was presented to Adolf Hitler on his 50th birthday as a retreat and place to entertain friends and visiting dignitaries. Today it is open seasonally as a restaurant, beer garden, and tourist site.
The Kehlsteinhaus 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 in 1939. From a large car park a 124m entry tunnel leads to an ornate elevator which ascends the final 124m to the building. Its car is surfaced with polished brass, Venetian mirrors and green leather. Construction of the entire project cost the lives of 12 workers. The building's main reception room is dominated by a fireplace of red Italian marble presented by Italian dictator Benito Mussolini, which was damaged by Allied soldiers chipping off pieces to take home as souvenirs. Much of the furniture was designed by Paul László.
References:The Chapel of St. Martin is the only completely preserved Romanesque building in Vyšehrad and one of the oldest in Prague. In was built around 1100 in the eastern part of the fortified outer ward. Between 1100 and 1300, the Rotrunda was surrounded by a cemetery. The building survived the Hussite Wars and was used as the municipal prison of the Town of the Vyšehrad Hill.
During the Thirty Years’ War, it was used as gunpowder storage, from 1700 to 1750, it was renovated and reconsecrated. In 1784, the chapel was closed passed to the military management which kept using it as a warehouseand a cannon-amunition manufacturing facility. In 1841, it was meant to be demolished to give way to the construction of a new road through Vyšehrad. Eventually, only the original western entrance was walled up and replaced with a new one in the sountren side. The dilapidating Rotunda subsequently served as a shelter for the poor.