Ther Gerrman City of Celle ist mostly known for its unique ensemble of historical buildings going back to the 1500s.
It is not well known that Celle also has many relicts from the early days of the Baushaus movement.
This sports room is part of the "Altstädter Schule" - in the 1920s Architects from all over the world would travel to visit this famouse building of https://en.wikipedia.org/wiki/Otto_Haesler