Here’s a poor view of the building murphaph describes
Always reminds me of Paul Bonatz’s wonderful 1927 Stuttgart Railway Station.
Bonatz studied under Theodor Fischer and although not a member of the nazi party, did a lot of work on infrastructure projects for the Third Reich. Very interesting guy if you are interested in the whole bauhaus/neo classical/modernist debate.
Although there are of course many other buildings with that particular sign rotating on them (Europa Center Berlin probably most famous), Stuttgart is the home of them all!