The DIN headquarters are in Berlin - just a short walk from Zoologischer Bahn - and we had a CEN meeting in their facilities.
In the evening we all took a scenic bus tour from "bahnhof zoo", past Bellevue, Reichstag, Unter der Linden, Marienkirche, Berliner Rathaus, etc. and had a great evening meal (and a few beers) in the cellar of an inn off Rathausstrasse.
And - the bus tour was courtesy of the S100 city bus - instead of buying the official tour - get a bus pass and take the S100 bus. It goes to the same places.
Robert