Strolling through Madrid is a great way to see the lavish Royal Palace, the 16th-century Puerta del Sol (Sun's Gate) marking the center of Spain, the old Moorish quarter of Moreria and much more.

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.

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.

This Red Sea resort town on the tip of the Sinai peninsula offers world-class diving with spectacular reefs, magnificent drop-offs and shipwrecks waiting to be explored.