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 ancient Argos Theater was built in 320 BC. and is located in Argos, Greece against Larissa Hill. Nearby from this site is Agora, Roman Odeon, and the Baths of Argos. The theater is one of the largest architectural developments in Greece and was renovated in ca 120 AD.
The Hellenistic theater at Argos is cut into the hillside of the Larisa, with 90 steps up a steep incline, forming a narrow rectilinear cavea. Among the largest theaters in Greece, it held about 20,000 spectators and is divided by two landings into three horizontal sections. Staircases further divide the cavea into four cunei, corresponding to the tribes of Argos A high wall was erected to prevent unauthorized access into the theatron and may have helped the acoustics, but it is said the sound quality is still very good today.
Around 120 CE, both theaters were renovated in the Roman style.