Do so, Bart lives right around the corner so we can make it a threesome.
Anyway, I'd recommend visiting Berlin. It's by far the greatest city I have visited.
To me it's a city of contrasts; amazing old and stately architecture, museums with incredible ancient era collections (Pergamon and everything else on the Museum Square), the Berliner Dom and many of the structures along the Unter den Linden street, but also the amazing modern architecture of Potsdamer Platz (Sony Center!). The remnants of the Wall, the depressing communist flats in the East contrasted to the colorful flats in the West...
Do make sure to book a reservation to be allowed up into the Reichstag dome, the view is amazing.