Off-The-Path.com: Best lookout over Berlin if you want a photo of Berlin with the TV tower in the picture! Also great view from the cafe! Remember that there are two stories! Better view from upstairs!
Philips at IFA 2013: For the health conscious, Tiergarten is a great place to get away from IFA. Take a jog with everyone training for the Berlin marathon which takes place just three weeks after the event.
bnz: on saturdays you will find a normal market place, on sunday its a great fleamarket around /w great vinyls, clothes, nerdy stuff.. its 'hip' to be there.. ;)
Chris Christian: Pick up the latest LEGO products at either the main entrance before you go downstairs or right before you exit after a day full of brick exploration.
DHR.com: This protestant church is a great piece of history where you'll see reminders of the war. Do not miss the Memorial Hall at the church's west tower to see some exhibits about the church's history.
Best Western Central Europe: Stroll the cobbled streets of Berlin´s old town. Enjoy dinner at one of the many restaurants offering traditional Berlin cuisine.
Kathrin S: A bit touristy supposedly, but I adore it! fresh oranje juice for 1 euro, delicious waffles with nutella, second hand clothing and new designers. Don't miss the outdoor karaoke!
CPN Wackernagel: Das Schloss wurde im Krieg vollständig zerstört und neu aufgebaut. Daher ist es nicht wirklich historisch. Aber der Schlosspark ist wunderschön.