Berlin Neuer Hauptbahnhof
The new Berlin (after the Wall came down) is a interesting city. A lot of new building projects started and the face of the city is constantly changing. Not everything becomes nicer. But I think, the new main station is a positive example. It a very modern building made out of steal and glass. On five different levels people can take trains, shop, eat and wait (you to wait a lot in Germany for trains). If you come to Berlin you can not miss it.