Copenhagen, Gdynia, Visby, Stockholm, Kiel & Copenhagen
Highlights
Copenhagen is the most populous city in Denmark and one of the most populous in the Nordic countries.
Gdynia is a modern port city in northern Poland located on the Baltic Sea coast.
Visby is a town on the Swedish island of Gotland in the Baltic Sea. It's known for its well-preserved town wall, a medieval fortification incorporating defensive towers.
Stockholm is famous for being a stunning island city that blends a medieval old town with cutting-edge tech innovation, world-class museums, and a rich cultural heritage.