Rauischholzhausen Castle, originally named New Potsdam, is a castle-like manor on the southwestern outskirts of Rauischholzhausen, a district of the municipality of Ebsdorfergrund in Hesse. The castle is managed by the Justus Liebig University Gießen, which uses it as a conference center. Around the castle is the 32-hectare Rauischholzhausen Palace Park, an English landscape garden that was created at the same time as the palace was built in 1871-1876.
In 1873, the later knighted industrialist and legation secretary Ferdinand Eduard Stumm (1843–1925) bought the site with meadows and forest areas. This had come to great prosperity as a partner of the Stumm brothers and, in competition with his brothers Carl Ferdinand von Stumm and Hugo Rudolf von Stumm, who also had magnificent castles built (Halberg Castle and Ramholz Castle), created the park and the castle. The castle was given the name "Neu Potsdam". The architect Carl Schäfer was commissioned with the planning of the castle. The park was designed by Heinrich Siesmayer, the creator of the Frankfurt palm garden.
The castle has been a conference and training center of the Justus Liebig University in Gießen since 1949. The Hessian Service Center for Agriculture, Horticulture and Nature Conservation - Rauischholzhausen Education Seminar is also located here.