Andy S.
Google
This place is well worth a visit. Of the two near-identical domes here, this is the one you can actually go to the top of and see the sights. You get clear views of Berliner Dom, the TV tower and all the rest of the Berlin skyline. The views are fantastic, and as its open air, pictures are much better than from the TV tower.
It’s a bit of a walk up but definitely worth doing.