World's Craziest Party Towns

Berlin, Germany

The Scene: At Berlin Fashion Week in 2009, designer Michael Michalsky threw one of the season’s hottest after-parties—in a derelict swimming pool turned debauched nightclub, where bartenders sported priest collars. Anything goes in wild international Berlin.

Hot Spots: Beautiful people, globe-trotters, and creative change-agents flock to venues like 360° sky-bar lounge for German techno; sky-high 40Seconds (named for its only access: a 40-second elevator ride), or club-restaurant Felix, where tables are cleared at 11 p.m. to make room for an epic dance floor between two-story-tall lighted pillars.

Tip: Some clubs are so trendy they don’t bother with signs. Hidden Bar Tausend hides under the Friedrichstrasse station railroad tracks, and Cookies lurks in a back alley off Gendarmenmarkt.