Berat, set along the Osum River in central Albania, is a city shaped by centuries of continuity and coexistence. Known as the City of a Thousand Windows, its white Ottoman-era houses climb the hillside toward a hilltop fortress, creating a striking and harmonious skyline.

Coursing through 10 countries, the Danube is the second-longest river in Europe. This waterway, lined with fortresses and castles, rises in Germany's Black Forest and runs for 1,770 miles to the Black Sea. The Danube is an essential commercial thoroughfare for central and southeastern Europe, and several river cruise companies sail vessels on it year-round. Destinations along this river include Vienna, Budapest, Passau and Bratislava.

Kampot is a riverside town in southern Cambodia with a story that stretches from a bustling 19th-century seaport to a calm center for travelers seeking real local experiences. Wandering these streets reveals faded pastel facades, shuttered balconies, and hints of a past where merchants from China, Malaysia, and Europe met on this quiet stretch of the Cambodian coast.

North of Cancun, the island was first discovered by the Spanish in the 1500's. It has numerous Mayan ruins, many badly eroded. It is also a sanctuary for sea turtles.

Albuquerque, New Mexico, is a city where centuries-old adobe architecture, desert landscapes, and modern innovation meet beneath some of the clearest skies in the country. Every October, Albuquerque becomes the site of one of the most photographed events in the world: the Albuquerque International Balloon Fiesta. For nine crisp mornings, hundreds of hot air balloons rise over the city, painting the sky in brilliant colors and wild shapes with everything from farm animals to space aliens.