F/6.3, 1/200s, ISO 100, 120mm, -1 2/3 Belichtungskorrektur.
The Wannsee Conference was a meeting of a group of police officers, civil and military representatives of the Nazi Germany about the "Final Solution for the Jewish Question" (Endlösung der Judenfrage). The agreements led to the Holocausto. The meeting took place on January 20, 1942 at the Villa Marlier (the one that you are seeing here). Source