Viking Sky: 14-Night Northern Europe from Bergen

Bergen cruise port is Norway's largest and the main gateway to the Norwegian fjords. The city sits on the country's western coast, surrounded by seven mountains and a network of deep, narrow fjords carved out by glaciers over thousands of years.

Oslo is Norway's capital, home to about 700,000 people in a city wrapped around the head of the Oslofjord with forested hills rising on every side. The city has undergone a dramatic transformation over the past two decades, with the harbor district rebuilt from industrial docks into a waterfront of museums, restaurants, and public spaces anchored by the angular white marble Opera House.

Oslo is Norway's capital, home to about 700,000 people in a city wrapped around the head of the Oslofjord with forested hills rising on every side. The city has undergone a dramatic transformation over the past two decades, with the harbor district rebuilt from industrial docks into a waterfront of museums, restaurants, and public spaces anchored by the angular white marble Opera House.

Copenhagen cruise port is the main cruise gateway to Scandinavia and one of the most important embarkation ports for Baltic and Norwegian fjord itineraries. The city has three cruise terminals.

Warnemunde is a seaside resort town at the mouth of the Warnow River on Germany's Baltic coast, serving as the cruise port for the Hanseatic city of Rostock and, more importantly for most passengers, as the gateway to Berlin, about 230 km (2.5 hours) to the south.

Tallinn's remarkably well-preserved medieval Old Town is a UNESCO World Heritage Site, with cobblestone streets, Gothic spires, and the Toompea Castle all walkable from the cruise port. The city offers excellent craft markets, medieval restaurants, and Baltic charm.