The “Einsteinturm” in Potsdam, Germany, is the first important building designed by the famous architect Erich Mendelsohn. It was planned and built in the years 1919 to 1924, the main part was finished in 1921. The inner part of the tower houses a solar observatory. It is now part of Potsdam Science Park and continues to serve as a center of astronomical research. The Tower in Potsdam, near Berlin is considered a key Expressionist building – its curved, organic forms depart from all traditional expectations of what a tower should look like.

The building attracted considerable attention, particularly because of the plastic treatment of form, which made the seven-story tower seem to flow upward from its rounded base to its domed observatory. This structure typifies his interest in an architecture of abstract, sculptural expressionism.

The Einstein Tower is an important building from the German expressionist period of the early 20th century. The building is a prominent example of expressionist architecture but it also has elements of Art Nouveau. Albert Einstein called the scientific building “organic!”. In Mendelsohn’s style, the complex aspects of modern technology, mathematics, and physics are represented by intricate winding shapes and elegantly bending curves.