16.04.2026
Wander through European cork forests, mixed forests, and mysterious ghost forests, all the way to the tropical rainforests of Amazonia, Central America, Africa, Madagascar, and Southeast Asia. Discover alien-like slime molds, nearly invisible moths, and long-extinct animal species such as the giant deer or the largest arthropod in world history!
Learn how unique and yet threatened the forests of our world are - and why their protection is so important for all of us. Listen to the sounds of different forests awakening on five continents in the sound booth and be enchanted by the world's largest indoor light sculpture: the "Tree," which rises 35 meters high inside the Gasometer.
Visitors can experience all this and much more at the Gasometer Oberhausen until the end of 2026. We offer an exciting audio tour with an interactive quiz for children, as well as a tour for adults in German, English, and Dutch. As with the previous exhibition, "Planet Ocean", the German version is narrated by GEO reporter Dirk Steffens. In addition to the audio descriptions, Dirk Steffens also shares his own experiences, such as an impressive encounter with elephants in Borneo.
We hope all visitors enjoy discovering this extraordinary exhibition!
Photos:
Tardigrade © Oliver Meckes and Nicole Ottawa
Exhibits © Dirk Böttger und Thomas Wolf, Gasometer Oberhausen GmbH
Congo Basin © Christian Ziegler
Slime mold with a woodlouse © Berry Webb
Haunted Forest © Kilian Schönberger
Sound booth © Thomas Wolf, Gasometer Oberhausen GmbH
Light sculpture "The Tree" © Thomas Wolf, Gasometer Oberhausen GmbH