Some (many?) states have closed Republican primaries. In the states you can only participate if you are a registered republican.
Google Lens showed this as Stadtbad Steglitz.
https://www.google.com/gasearch?q=Stadtbad Steglitz&tbm=isch&source=sh/x/gs/m2/5
It’s nice to get some recognition, thank you.
I’d upvote you twice if I could!