Best for luxury: Saint-Barthélemy

Saint-Barthélemy — aka St. Barts or St. Barths — is a French-speaking Caribbean island that's popular among the rich and famous, thanks to its stunning beaches, designer boutiques, and gourmet restaurants.

Celebrities can often be seen mooring their yachts here, while beach clubs like Nikki Beach host parties that last well into the night. Accommodations include private villas and rooms that come with private butlers.