A World Affairs Voyage from Copenhagen to London

Rising from the harbour that Viking chieftain Absalon fortified in 1167, Copenhagen has evolved into one of Europe's most sophisticated capitals — a city where medieval spires and cutting-edge architecture coexist with effortless style. Savour smørrebrød at a century-old lunch counter, cycle across the harbour bridge to the revitalised Meatpacking District, and venture north to Kronborg Castle — Shakespeare's Elsinore. As one of Northern Europe's premier cruise homeports, it serves as the ideal gateway to Baltic and Scandinavian itineraries, best experienced from May to September.

Warnemünde is a beguiling Baltic seaside town at the mouth of the Warnow — at once a historic fishing port documented since 1195, an East German nostalgic resort beloved for its endless sandy beach and candy-striped lighthouse, and the maritime gateway to the proud Hanseatic city of Rostock just minutes away. The broad promenade, traditional Strandkörbe wicker beach chairs, and lively harbor-front fish restaurants give the town an unhurried, timeless character quite distinct from Germany's busier North Sea resorts. Summer is the prime season, when the Baltic's mild waters warm for swimming and the Rostock sailing regatta brings vibrant nautical pageantry to the harbor.

Wismar, Germany is a distinctive port city where deep cultural heritage meets authentic local atmosphere, featured on itineraries by Ponant. Must-do experiences include walking the historic center to experience the layered architectural heritage, and seeking out the regional culinary traditions at a locally favored establishment away from the port area. The optimal time to visit is June through August, when summer months bring the warmest temperatures and longest days.

Harlingen is a beautifully preserved Frisian port town on the Dutch Wadden Sea coast, gateway to the UNESCO-listed tidal flat ecosystem where guided mudflat walking and ferry trips to car-free barrier islands offer uniquely Dutch experiences. Must-dos include wadlopen mudflat walking, the historic tile factory, and fresh gray shrimp on brown bread. May through September is ideal, with migration seasons best for birdwatching.

Amsterdam's UNESCO-listed canal ring — a concentric web of seventeenth-century merchant houses and arching stone bridges — remains one of the Western world's most perfectly preserved Golden Age cityscapes, best explored by bicycle or canal boat at a pace that lets the city's genius reveal itself slowly. The Rijksmuseum's collection of Rembrandt and Vermeer masterpieces is essential, while the Anne Frank House offers one of Europe's most profoundly moving historical encounters. Spring brings the iconic tulip season; summer fills the terraces of the Jordaan district. Schiphol Airport makes Amsterdam a seamless gateway to the entire European continent.

Den Haag, Netherlands is a distinctive port city where deep cultural heritage meets authentic local atmosphere, featured on itineraries by Ponant. Must-do experiences include walking the historic center to experience the layered architectural heritage, and seeking out the regional culinary traditions at a locally favored establishment away from the port area. The optimal time to visit is June through August, when summer months bring the warmest temperatures and longest days.

Antwerp has been one of Europe's great mercantile capitals since the fifteenth century, when it commanded the world's first commodity exchange and Peter Paul Rubens made it the artistic capital of the Baroque world — a legacy preserved in the magnificent Rubenshuis studio and the soaring Cathedral of Our Lady, whose nave houses four of the master's greatest altarpieces. Today the city leads global fashion from the acclaimed Antwerp Six design school and remains the diamond capital of the world, with 84% of the world's rough diamonds trading through its storied district. Visit in spring or autumn; Brussels and Bruges are each under an hour away by train.

Oostende (Ostend) in Belgium is a distinctive cruise destination that rewards curious travelers with authentic cultural encounters and natural beauty. Don't miss the local markets and the surrounding landscapes that extend the experience beyond the port itself. The most favorable visiting conditions prevail May through October, when the climate is at its most welcoming for outdoor exploration. Cruise lines including Scenic Ocean Cruises feature this port on their most compelling itineraries. Whether you have a few hours or a full day, the port rewards exploration at every pace and in every direction.

Dunkerque is a Flemish port city on France's northernmost coast, forever marked by the 1940 evacuation of 338,000 Allied soldiers and enlivened by one of Europe's most exuberant carnival traditions. Must-dos include the Operation Dynamo museum, walking the evacuation beach at Malo-les-Bains, and experiencing the wild Carnival of Dunkerque (January-March). Visit summer for beach weather and WWII sites, or winter for the unmissable carnival season and Flemish beer culture.

The point from which every navigator on earth determines their longitude, Greenwich anchors the world's meridian with a UNESCO-listed collection of maritime monuments — from the brass Prime Meridian line at the Royal Observatory to the Cutty Sark's wind-worn hull and the baroque Painted Hall of the Old Royal Naval College. Board the Thames Clipper for a 30-minute glide to central London, or explore the weekend market's global food stalls. Summer brings the Thames to its most inviting, with long evenings golden above the river.