Berlin is an awesome city!
I'm sure you'll have a good time seeing the area if ya make the best of it.
I am not that familiar with the city but did spend a few weeks there. I lived in Germany for a bit while finishing school at the Uni. and one of the coolest things I did/saw while in Berlin was this HUGE Botanical Garden in the south of the city.
I know I know... it's not the hottest club with the nightlife ... LOL, but it was one of the most amazing things I've seen anywhere in the world. And after spending so much time in such a large city and traveling this was a peaceful place to wander around in amazement at all plants of the world.
I spent a whole day there and still didn't get to see it all. It's that big.
It's called: Botanischer Garten und Botanisches Museum Berlin-Dahlem
Basically it's garden after garden of all types of plants from countries of the world and it's organized either by country or continent.
http://en.wikipedia.org/wiki/Botanical_Garden_in_Berlin
If you're into history at all then there is SO much to check out and even if you're not history buff you still may find them interesting:
- Brandenburg gate area, and the Parliament building (close to each other)
- Checkpoint Charlie area
- The TV tower, and ... not sure where anymore, but near there is a square with museums and cool old buildings.
- The Radio tower
- Drive by the Victory Column, used to be able to climb it. not sure now
- Swing by the Kolhoff tower, near Potsdammer Platz and go to the top to check out the views of the eastern (I think) side of the city, and you can do the same at "Europe Center/Berlin Windows".
Near Potsdammer Platz I think there were several other things in the area that were cool. =)
Anyway, it's a really cool city packed with a rich history. After you're back share some photos Berlin if you want... =)