Photo: Alex1011, CC BY-SA 3.0 via Wikimedia Commons
Sometimes controversial, modern theater.
The Volksbühne is a theater in Berlin. Located in Berlin's city center Mitte on Rosa-Luxemburg-Platz in what was the GDR's capital. It has been called Berlin's most iconic theatre.
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Panorama Terasse
Small terrace on the top of the Park Inn, publicly accessible. Take the elevator to the 40th floor, and follow the signs up the stairs. Pay the attendant who also serves beer and coffee. Great views of the Fernsehturm. In the summer, consider base jumping off the roof with Jochen Schweizer. It is often closed in bad/windy weather, so look for a notice posted near the elevator that the terrace is closed.
Urania World Clock
Built in 1969, this 16-ton, communist-era clock is one of Berlin's main meeting points. Each of its 24 sides corresponds to one of Earth's 24 time zones and it has the names of some of the world's most important cities written on it.
Television tower
At 368 metres, the Fernsehturm is Berlin's tallest and indeed EU's second-tallest building, complected between 1965 and 1969. The main function of the building is television broadcasting, but the shiny sphere atop the tower houses a viewing platform, a restaurant and a Berlin Tourist Information point. The viewing platform sits 203 metres above ground, affording views of as much as 42 km away and featuring a bar. Given how flat Berlin is, it's not a very interesting view however and the state of the glass means that you can't get good photos either. The Sphere restaurant at 207 metres rotates at a speed of one full spin per 30 minutes. There are two lifts from the base to the platform and cafe, taking 40 seconds to reach the top, as well as a 986-step staircase. The Fernsehturm is not accessible to wheelchair users.
Not all of the Berliners liked the tower and the overall composition of the Alexanderplatz afforded by the socialist city planners. East German T.V. tried to establish the nickname "Telespargel" ("television asparagus") which however doesn't seem to have caught on. During certain times of day, sunlight reflecting from the top caused a large cross-shaped light to shine down on the city. Called the Rache des Papstes (Pope's revenge) by nominally atheist East Berliners, the light-cross was an ironic result of socialist architecture. Rumour has it the architect was deprived of more than his next commission after that fiasco. At night, the Fernsehturm sometimes appears to be shooting light beams from the tower section, giving the impression it's a Death Star à la Star Wars.
Repertory cinema located in an ex-squat.
The complex consists of eight interconnected courtyards. Plenty of designer boutiques can be found here.