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.

Say aloha to tropical breezes, oceanfront luaus and iconic Diamond Head on Oahu, the most populated Hawaiian island. Follow in the sandprints of surfing forefather Duke Kahanamoku on Waikiki Beach, visit the royal quarters of Iolani Palace and tour Pearl Harbor.

It's the East Coast's answer to Las Vegas. Atlantic City's casinos draw tourists by the car- and bus-load, but even if your main objective is to play some blackjack, you'll want to save time for sightseeing.

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.