Tremoniapark, Urban park in Dortmund, Germany.

Tremoniapark is an urban park in Dortmund built on the grounds of a former industrial site, featuring open grasslands, walking paths, basketball courts, and patches of woodland. The layout offers multiple access points and different activity zones throughout the space.

Iron production on the site began with the Carl von Born ironworks, which later belonged at times to the Hörder Bergwerks- und Hütten-Verein and to Phoenix AG für Bergbau und Hüttenbetrieb, and from 1926 was a production site of Vereinigte Stahlwerke AG. North of Haldenstraße lay the former Zeche Tremonia, mined for coal and used as a test mine long after extraction ended. The derelict grounds were developed into a roughly 10-hectare park between 1993 and 1996.

The park preserves industrial remnants like Klöpperböden pressure vessels that tell the story of Dortmund's manufacturing past. These artifacts give visitors a sense of how factories once shaped this place.

The park is easily accessible by public transportation with direct routes to the city center, making it a convenient destination to reach. Keep in mind that sports clubs regularly use training facilities on the grounds, so timing your visit might affect what you see and experience.

The Ultimate team that trained here first called itself Torpedo Phoenix, after the football club Torpedo Tremonia, and later adopted the name as its own club name. The half-shell Klöpperböden in the park were parts of pressure vessels.