Waldbühne Hardt, Natural monument and sylvan theater in Wuppertal, Germany.

Waldbühne Hardt is an open-air theater in the Wuppertal woodland, designed in an amphitheater shape that integrates into the landscape. The stage and seating areas are surrounded by trees, which provide the venue with a natural green backdrop.

The stage occupies a former quarry on the southwestern slope of the Hardt, where stone was cut in the 18th and 19th centuries for road paving and house building. The hollow is protected as a geological natural monument. Concerts and theatre have been staged in the bowl since the late 20th century, and the Feuertal medieval-rock festival ran there annually from 2003 to 2025.

The theater draws music fans each year who gather here under trees for concerts and the Feuertal Festival. These events bring artists and visitors together, turning the wooded space into a place for shared experiences.

Visitors should know that the venue is surrounded by nature and weather can affect events, so bringing appropriate clothing is wise. Getting there by public transport or car is possible, and parking facilities are available.

The stage sits in a hollow formed by a former quarry, worked in the 18th and 19th centuries for road paving and house building. That rock face is protected as a geological natural monument. On 20 July 2007 the basin hosted an English-language Harry Potter reading on the night the final volume went on sale.