Showcase (CLOSED)

This vast venue, in converted boat hangars below Pont Alexandre III, is where music-crazed insomniacs come on weekends to discover up-and-coming bands and dance until daybreak. The club has lost some of its hype over the last couple of years, but high-profile guest DJs have been setting the bar higher lately: Carol Cox, will.i.am and Calvin Harris have all made appearances in the past year.