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.

Wisconsin offers a diverse array of experiences that draw visitors year-round. The state proudly showcases its cheese heritage with countless cheese factories and festivals, where visitors can sample local favorites like aged cheddar and gouda. Beyond its culinary fame, Wisconsin’s history is equally rich, with cities like Milwaukee boasting a deep brewing tradition and landmarks such as the Pabst Mansion and Harley-Davidson Museum that celebrate its industrial roots.

Santa Marta, located on Colombia’s northern Caribbean coast, is one of the country’s oldest cities, founded in 1525. It has long served as a gateway between the coast and the Sierra Nevada de Santa Marta, the world’s highest coastal mountain range.

Limpopo is South Africa’s northernmost province, sharing international borders with Botswana, Zimbabwe, and Mozambique. Its landscape ranges from the bushveld and baobab-studded plains of the north to the Soutpansberg Mountains, escarpment forests, and fertile valleys of the south. The province is strongly associated with wildlife, with large protected areas forming part of the Greater Kruger ecosystem.

A true gem on the Caribbean coast, the port city of Cartagena (Cartagena de Indias) welcomes visitors with its charming old town, colonial buildings, and exceptional beaches. A popular cruise ship stop, many seafarers find themselves honorary Cartagenans, as they stroll shady, cobblestone lanes and gaze upon impressive churches.