We went into the observation deck of the Fernsehturm and looked out at Berlin. We could not stop and get something to eat there (not that we were hungry) as the restaurant was full at the time and they were not letting people up there.
The views from here are incredible, looking out over the eastern part of Germany, and even so far as the Waldbühne. I particularly picked out the beautiful dome of the new synagoge and the Ostbahnhof, where we would have to be the next night. The tower itself is rather aged, and not architecturally beautiful. At the base, inside, were several shops, including a Russian shop, somehow appropriate here in the former East Germany.