Grand Cayman's splashier side is the real draw. Offering a host of experiences, from petting attention- and food-seeking stingrays at Stingray City to exploring jaw-dropping drop-offs and dive sites, Grand Cayman is a watery wonderland.

If you visit Honolulu simply for the wide Pacific beaches, the striking views of Ko'olau's pali (cliffs) and the laid-back "aloha" feeling, you'll be missing out on much this city has to offer.

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.

This canal-laced city is a far cry from its spring break party image of the past. Following renovation and renewal, upscale stores and restaurants have replaced fast-food stands and T-shirt shops.