Former palaces and Arab mansions along the twisting streets of Stone Town hint at a grander age for this port city on the western coast of Zanzibar. The Old Fort, built in the 1700s to fend off the Portuguese, now hosts local performances, a café and an art gallery. Overstuffed bazaars lend an air of nonstop bustle. Mafia Island Marine Park sits just offshore, a haven for snorkeling the local reefs. Day tours visit working plantations where the island's legendary spices are grown.

Bangkok is full of exquisitely decorated Buddhist temples—as you go from one to the next you’ll be continually blown away by the craftsmanship and elabourate details. But if you’d rather seek enlightenment in a gourmet meal, or dance the night away, you’ll also enjoy Bangkok—the restaurant and nightclub scenes here are among the best in the world.

Singapore is known as a bustling metropolis that also happens to be one of the cleanest and safest cities of its size in the world. (Just make sure you heed the local laws—something like spitting in the street might merely be considered rude in your hometown, but here, it carries a severe penalty.) You'll find historic sites like the Thian Hock Keng temple, superlative shopping (including gargantuan malls) and numerous beaches.