Luxury resorts rub elbows with backpacker accommodations on the Thai island of Ko Samui, a 15-mile-long palm-covered tropical oasis located off the country's east coast.

The sound of music lures fans both of classical music and of Julie Andrews to Salzburg. Most sights are within walking distance of the city center.

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.

Relaxing and pristine Kauai (the Garden Island)is the least commercially developed of the Hawaiian islands. Waterfalls, scenic drives and more than 60 beaches dot the landscape.