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.

Amiens is a city in northern France and the capital of the Somme department, set along the Somme River amid the Picardy countryside. Its historic centre is dominated by Amiens Cathedral, one of the largest Gothic cathedrals in France and a UNESCO World Heritage Site. Waterways are also central to the city's character, particularly in the Hortillonnages, a network of gardens and canals on former marshland.

Kingman is a city in northwestern Arizona, set among the rugged mountains and high desert of Mohave County. Its location along historic U.S. Route 66 has made it an important stopping point for travelers crossing the Southwest, while its position between the Colorado River and the high country gives the city a varied surrounding landscape. Historic downtown Kingman contains preserved storefronts, murals, museums, and roadside landmarks that reflect its transportation heritage.

Cardiff, the capital of Wales, is a city brimming with history, culture, and modern vibrancy. At the heart of its historic charm stands the Cardiff Castle, a magnificent structure that dates back to Roman times and has been a centerpiece of Welsh history for centuries. Explore the castle’s stunning medieval architecture and lavish interiors, or take a walk around the castle grounds, which offer picturesque views of the city skyline.

Olympic National Park occupies Washington State’s remote northwest corner, shaped by isolation and ecological range rather than a single defining feature.