Stromboli is a small volcanic island in the Tyrrhenian Sea, just off the north coast of Sicily. Referred to by some as the "Lighthouse of the Mediterranean," Stromboli is in a constant state of mild volcanic activity, so don't venture out on a hike without an experienced guide.

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.

Sapa sits high in Vietnam’s northwest mountains, shaped by French colonial planning and long-standing settlement by Hmong, Dao, and other ethnic communities.

Samarkand is one of Central Asia’s most storied cities, famed for its role as a crossroads of culture, science, and trade along the Silk Road. The heart of the city is the Registan, a grand square framed by three ornate madrasas decorated with vivid mosaics, intricate tilework, and soaring arches.

ABERDEEN -- Scotland's third-largest city (pop. 187,000) is characterized by buildings of beautiful white granite. Set beside the North Sea, Aberdeen is both a university town and the capital of the Scottish oil boom. It is also one of Scotland's largest seaside resorts (though its appeal is confined to those who like their water well-chilled).