Bring up the word Berghain to anyone who likes clubbing, Berlin, electronic music, or a combination of those things, and there will be an insane story to tell. The institution operates with its own culture, rules, and ideology: The party doesn’t really start until 8 a.m., you can’t take photos or bring in your phone, and nearly everything else is allowed inside (the more prurient, in some cases, the better).However, like most other clubs, entry is based mostly on...