Berlin Alexanderplatz 1990. A sign showing the U-Bahn line going to Otto-Grotewohl-Strasse. Wilhelmstrasse was renamed this in the time of the DDR. Otto Grotewohl was one of the milder bigwigs of the East German regime, who died in 1964. I can find very little online about it now, but I remember there were arguments about what to call this street after the fall of the wall. I have the standard Falk-Plan map of Berlin, 56th edition from 1992/1993 which calls it Toleranz Strasse. The name Wilhelmstrasse still had a bad resonance for some people, I think.