In the location's words:

The Berlin Parkbühne Wuhlheide is a listed open-air venue in the form of an amphitheater. It is located in the Volkspark Wuhlheide, part of Berlin-Oberschöneweide, in the district of Treptow-Köpenick. The park stage has an unseated capacity of 17,000 spectators and 15,300 seats with chairs inside.