Mülheim´s open-air-theatre was built in 1936. With 2.000 seats it is one of the largest outdoor theaters in Germany and is the most important facility of its kind in the Rhine-Ruhr area.
Because of the unique natural atmosphere and proximity to Mülheim’s old town, this natural monument offers a large variety of cultural offers, e.g. the "Mittwochsreihe", a broad spectrum (pop, folk, funk etc.) of musical venues on several wednesdays during summer.