Sven B.
Google
Comprehensive history of the Cold War in Berlin with as much detail as you could possibly want, but lots of reading (Information provided in German, Russian, English and French)! If you're not much of a reader or if you're after a quick overview, this museum will be difficult. If you are a strong reader and you're interested, allow a few hours, it's excellent! They also charge extra if you want to take photos, which seems a bit odd.