Travelers on the Arabian Sea often find themselves in Muscat, on the Gulf of Oman. This port capital is situated between ocean and mountains, and boasts lovely beaches, great diving sites (watch for turtles!), 16th-century forts, and the impressive Sultan Qaboos Grand Mosque, which can hold 20,000 people.

Are you ready to go to the End of the World? Stunning views of snow-capped mountain peaks await you in Ushuaia, located on the southernmost tip of South America.

Greenland is the largest island in the world, inhabited only by about 60,000 people. It is a country dependent mostly on foreign trade, with about one quarter of its income from fishing. Eight-five percent of the country is covered by ice; in some parts it is 2 miles thick.

Situated between Mexico and Colombia, Central America is comprised of seven countries: Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, and Panama.

Cairns is the majestic entrance to Australia's Great Barrier Reef. This warm, tropical destination is located in Far North Queensland. Must-see attractions in Cairns include the Tjapukai Aboriginal Cultural Park, which educates tourists about indigenous peoples, and restaurant and bar-dotted Cairns Esplanade, which has a lagoon for swimming.