Quark
Der Beste
There's not much left and you ain't really allowed to see it properly. Also it doesn't show the effect on life in DDR. Therefore it's not that interesting.
(...)
It is!
If you go to the Warschauer Straße (near the U-Bahn station) there's still a peace of Mauer over there. But you can only see the "Wessie" side of it. (at least, at the time I was there) For some reasons, the "Ossies" side was/is still closed.
But it's true about the way of life in East Berlin. It has completely disappeared. The only things you can see are some old appartment blocks they haven't destroyed yet.
But there's always the museum, and the old Checkpoint Charlie, now a museum.
O yes, before I forget, the answer is: In the front seat. (should you decide to visit the museum)
But I'm sorry, I forgot the question.

Thanks btw.