I'm visiting Germany the first week of September. I'm arriving in Berlin at noon and leaving at 6:00 p.m the next day. With only 30 hours in Berlin, what MUST I visit? I've been to Berlin twice before, but that was before the wall came down. I'm staying in the area of the Brandenburger Tor and Reichstag. I know this is incredibly different today than my last visit in 1984. I am traveling with someone who has never been to Berlin.