Waldbühne

The Waldbühne is a theatre at Olympiapark Berlin in Berlin, Germany. It was designed by German architect Werner March in emulation of a Greek theatre and built between 1934 and 1936 as the Dietrich-Eckart-Freilichtbühne, a Nazi Thingplatz, and opened in association with the 1936 Summer Olympics. Since World War II it has been used for a variety of events, including boxing matches, film showings and classical and rock concerts. It seats more than 22,000 people. The venue is located off Friedrich-Friesen-Allee just northeast of Glockenturmstraße.

Source: Wikipedia