Western Sahara, (formerly Spanish Sahara), northwestern Africa, former overseas province of Spain partitioned in 1976 between Mauritania and Morocco, and since 1979, occupied entirely by Morocco.

Nicaragua offers travelers a look into centuries of layered history set against striking natural backdrops. Visitors can tour the baroque-style Granada Cathedral, take a boat ride through Las Isletas (a chain of small, volcanic islands in Lake Nicaragua), or climb the bell tower of Iglesia La Merced for sweeping city views.

This natural reef and its uninhabited islands are home to one of the natural wonders of Belize, the Blue Hole. An underwater shaft that drops from a ten-foot-deep lagoon, it opens into a series of elaborate, stalactite-filled caverns. A true diver's paradise!

Badlands National Park stretches across southwestern South Dakota, where layered rock formations and sharply eroded spires reveal nearly 75 million years of geological history. The park’s banded cliffs and pinnacles were shaped by wind and water, exposing ancient seabeds and fossil-rich layers that have made the area one of North America’s most important paleontological sites.

An essential passageway between the Atlantic and Pacific Oceans, the Panama Canal is an extraordinary technological landmark and a testament to human innovation. Built in the early twentieth century by American engineers, the canal weaves through the Panamanian isthmus and allows easy access for commercial freighters and cruise ships alike.