15. XS

City: Las Vegas
Address: 3131 Las Vegas Blvd. South
Status: Open
Website: xslasvegas.com

Plush red and gold outfittings give the super-lavish interior some warmth at this Sin City favorite, while big-name DJs provide the serious heat. A plethora of pimped out, two-storey poolside cabanas allow patrons to drop XS cash on bottles, while neighboring blackjack tables afford optimists the chance to win it back.