Macau Region, China
A short ferry-boat ride from Hong Kong, there's a gambling destination bringing in more cash than Las Vegas -- four times more cash, in fact [source: Delaney]. Were it a competition (and maybe it is), this would probably make China's Macau region the gambling capital of the world.
Macau has 18 casinos, including Vegas staples like MGM and Wynn, along with other Sin City-style entertainment: amusement parks, shopping and bars that never close [source: TripAdvisor]. It's a decidedly Western-style gaming hub smack in the middle of an ancient Chinese fishing village, though for tourists who want a feel for Macau's pre-poker life, the city does feature a preserved historic area [source: Macau Tourism].
And don't fear, questionable attractions and unusual imitations aren't limited to the Nevada desert, either. While you're in town, don't miss the paintball park at Macau's Fisherman's Wharf. There, you'll find a life-size depiction of what looks a lot like a crash scene from "Black Hawk Down," with heavily armed U.S. soldiers standing beside a downed helicopter, in the midst of a whole fake North African city -- the perfect paintball war zone, apparently.