To visit Barcelona is to embrace both the past and the future. There is much to do and see in this cosmopolitan capital of Catalonia, from medieval structures to beaches to UNESCO Heritage Sites by Antoni Gaudí and Lluís Doménech i Montaner.

Beaches, margaritas and relaxed vibes are all part of visiting the island city of Key West, where summer never ends.

Alaska's largest city is the perfect place for anyone who wants a vacation filled with wildlife, outdoor activities, glaciers and gorgeous parks.

At more than 7,000 feet above sea level in the Andes Mountains, this symbol of the Incan Empire was designated a UNESCO World Heritage Site in 1983 and was named one of the New Seven Wonders of the World in 2007.

Singapore is the 5th most visited city in the world, and when you step foot in this modern, culturally rich city you'll see why!