I am afraid most people outside of Germany probably don't know Willy Brandt (although he did win a Nobel Peace Prize!). He was mayor of West Berlin when Kennedy made his famous speech here at the Rathaus Schöneberg and he also offered some inspiring words of his own (only his were in German). Brandt later served as Chancellor of West Germany under the Social Democratic party. He was loved by Berliners and the German people in general for his passion and integrity.
I think it's fitting the nicest room in City Hall is named for him. I just love those big windows and all the light. You can read more about Brandt by clicking on his name above, it's worth your time.