It is situated in an Art-Deco water tower, designed by Oskar Menzel and built between 1912 and 1915.

The core of the work is the development of the entrance from the outside pedestal on which the water tower stands.

Access to the planetarium will take place in the future at ground level from the City Park.

Two elevators will in future facilitate access to the Star Hall and the popular observation deck, which also will be barrier-free for the first time then.

The expansion will bring the added value of an area of approximately 1,200 square meters floor space with them.