World's Hottest Billionaire Playgrounds

Basil's Bar & Restaurant is a wooden shack of a beach bar located on the remote Caribbean island of Mustique. But despite its understated look, a night out at Basil's could bring you face to face with Tommy Hilfiger, Mick Jagger, Denzel Washington or even Queen Elizabeth.

"Here, they get to let their hair down and be normal people," says owner Basil Charles. "Bill Gates was sitting at the end of my bar reading a book one morning--I had no idea who this man was."

This 30-year-old establishment is one of the liveliest--and one of the only--bars on Mustique.

Nicknamed "Billionaires Island," the 1,400-acre Mustique is so exclusive, there's only one hotel--the 17-room Cotton House Hotel. Most wealthy visitors rent one of 100 private villas, which run as much as $150,000 a week. Staffed with private chefs, butlers and maids, these full-service, two- to nine-bedroom residences give the mega-rich the opportunity to stay in what are essentially their own private hotels.

Mustique is one of a handful of exclusive and exotic hot spots billionaires go to relax and blow off steam. Whether they crave pristine beaches, rugged mountains or just a ridiculous resort in the middle of nowhere, billionaires have the megabucks to lap up luxury anywhere they desire.

In Pictures: World's Hottest Billionaire Playgrounds

And if they want a destination with a little more glamour and action than remote Mustique, they jet to the French port town of St. Tropez to show off their hard-earned assets.

The French Rivera's most popular summertime spot offers one of the most glamorous ports in the Mediterranean, where owners of some of the world's largest yachts drop anchor to raise their glasses in the town's bustling bars, restaurants and nightclubs.