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

The Mayan Riviera, Mexico's Caribbean coastline, is more than just the resort town of Playa del Carmen. Stretching from the fishing village of Puerto Morales to the biosphere reserve of Sian Ka'an, the area offers visitors a plethora of both eco-tourism and luxury destinations.

The Indonesian island of Bali is a favorite destination for both adventurers and those in need of a little relaxation. The waters off the coast of Bali's white beaches are an ideal spot for diving, while the dense jungles, teeming with monkeys and hidden stone temples, call out for exploration.

Historic and modern, European and Asian — that's Istanbul. The city at the junction of two continents is home to ancient structures like the Hagia Sophia and the Blue Mosque in the Old City, as well as modern businesses, hotels, restaurants and nightlife in the New City.