The Underground nightclub takes its tenor of exclusivity seriously with a military theme and unmarked basement level entrance. Those who live for a see-and-be-seen atmosphere feel right at home here. Bottle service and celebrity sightings are de rigueur after accessing the cavernous bomb shelter entryway where DJs spin until the sun comes up and candlelit ammunition crates serve as tables to hold your top-shelf cocktails. Party with a mix of Chicago-based DJs and nationally-recognized musical performers. Resident DJ, Dante the Don, is well known (he's also the DJ for Cubs games at Wrigley Field), but you can also expect talent from around the world such as The Ying Yang Twins and Petey Pablo.