Glamorous Santorini, in the southern Aegean's Cyclades islands, curves round a giant lagoon, a caldera left by a volcanic eruption.

Where else are Ernest Hemingway and Jimmy Buffett equally revered? Key West is a sunny, fun destination with enough sights to keep you busy when you're not snorkeling, parasailing or catching some rays.

Bangkok is a city to overload the senses. Streets are crowded by tuk-tuks (motorized tri-shaws) and the occasional elephant weaving through congested traffic.

The Dominican Republic lies in the same waters as Cuba and Puerto Rico, taking up the eastern two-thirds of the island it shares with Haiti.