Denver, Colorado, known as the “Mile High City” for its elevation exactly 5,280 feet above sea level, offers far more than a mountain backdrop. It’s a city where old saloons, Victorian homes, and vintage brick warehouses sit beside sleek skyscrapers and buzzing food halls. While the nearby Rocky Mountains are visible from almost anywhere in the city, places like City Park and Washington Park offer wide green spaces right in town.

Basel is the global center of the pharmaceutical industry, but most travelers visit for the world-famous ART Basel festival, as well as the numerous art galleries, iconic architecture and museums.

Located in northern Germany, Hamburg is an important commercial hub on the Elbe River and unique for the expansive system of canals which divide the city in two. Replete with fascinating architecture and scenic waterfront promenades, Hamburg offers plenty to see and explore!

The Amazon River, winding through the heart of South America, is a marvel of nature that offers unparalleled adventure in one of the most biodiverse regions on Earth.

Located on the banks of the Danube, Spitz an der Donau is a charming market town in Austria's Wachau valley. Occupied since Celtic times, Spitz offers spectacular views of the Danube valley.