However , it was only used as such until 1924 , and subsequently converted to a planetarium .
It is situated in an Art - Deco water tower , designed by Oskar Menzel and built between 1912 and 1915 .
It was only used as such until 1924 , and subsequently converted to a planetarium .
It is situated in an Art - Deco water tower , designed by Oskar Menzel and built between 1912 and 1915 .