If you're going to Berghain/Panoramabar, be prepared to walk for a bit. It's technically in Friedrichshain, but it's in the middle of an old industrial area that's not near any public transport or anything. When we went there a few years ago, at some point we thought we're lost, as there was just this empty industrial lot with no lights or anything, but then we saw cars driving into the same direction we were heading, so we knew something was there.
Also, at the door they did a body search for everyone, which is quite rare in Germany, I think. Dunno if they'd had some problems with guns or knives or something... AFAIK Berlin is generally pretty safe for a city of that size.
― Tuomas, Saturday, 28 August 2010 12:24 (thirteen years ago) link