Walvis Bay, set along Namibia’s Atlantic coast, is a vibrant port town where desert and ocean converge in striking contrast. Once under German and later South African administration, the bay has long been valued for its deep natural harbor, which remains central to Namibia’s fishing and shipping industries today.

Seven miles outside of historic Athens, the Greek coastal city of Piraeus lies upon the sparkling waters of the Aegean Sea and is the largest passenger port in Europe, servicing nearly 20 million passengers per year.

Guernsey, the second-largest of the Channel Islands, blends coastal landscapes with a deep-rooted history shaped by centuries of outside influence. Though located closer to France than to mainland Britain, Guernsey is a British Crown Dependency with its own government and a distinct identity. The capital, St Peter Port, is a hillside town overlooking a natural harbor, where visitors can explore narrow lanes, stone stairways, and 18th-century buildings.

Potosí rises on the Altiplano of southern Bolivia and for centuries it was one of the richest cities in the world because of what lies just beyond its streets. At the foot of Cerro Rico (“Rich Mountain”), silver was discovered in the mid-1500s, and within a few decades the city became a center of mining and wealth that shaped global trade and economies.

Berlin has an undeniable history. The horrors of World War II, division, reunification, revolution all profoundly impacted the city in the 20th century. Today, visitors will find a sophisticated, high-energy city with endless cultural, architectural and gastronomic attractions.