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Photo: Jörg Braukmann, CC BY-SA 4.0 via Wikimedia Commons
Ancient Celtic buildings, e.g., a Celtic oppidum was rebuilt. They are on small wooded hill where activities such as hiking and cycling are popular. Nearby are some old castles, which can be visited too.
Dünsberg is a hill slightly northwest of Gießen in Hesse, Germany. At 498 meters in height, it is the highest mountain in the Gießen and Wetzlar area.
© OpenStreetMap contributors
An interactive museum of math and physics just down the road from the main train station.
A museum dedicated to the chemist Justus Liebig and chemistry in Liebig's original laboratory. It offers lectures with demonstrations of chemical reactions. Due to a fire in 2022 its opening hours are limited during the reconstruction.
elefant's toilette
The most known view in Gießen seems to be the E-Klo, a "masterwork" of the questionable urban planning policy from the late 1960s. It is a massive pedestrian overpass found at Selterstor. The popular name is due to the three large octagonal openings in the concrete slab. This says a lot about what is there to see in urban Gießen.
With temporary art exhibitions.