Well, for one, it all centers around the town of Porto Cervo. There're only 200 permanent inhabitants, but enough rich people come every year that the biggest nightlife spot is straight-up called "The Billionaire Club". The area was founded in '62 by Prince Aga Khan, who, in addition to $800m, has around 10 million religious followers who believe him to be infallible. He hired an architect to design the entire town. Now it has a sailing regatta, a vintage car rally, film & wine festivals, and mad yachts, son. Oh, and a Bond film was set there (The Spy Who Loved Me, natch).