Potsdam, the capital of Germany’s Brandenburg state, lies just southwest of Berlin and is best known for its grand palaces, landscaped gardens, and role as a seat of Prussian royalty.

Rijeka sits at the head of Kvarner Bay on Croatia’s northern Adriatic, shaped by its long role as a port city at the crossroads of empires.

Seattle is a city shaped by water, mountains, and innovation. Its skyline, dominated by the Space Needle, tells only part of the story. Beneath it lies a vibrant mix of neighborhoods, each with its own character. Seattle was the birthplace of grunge music and remains a stronghold for independent arts. The Museum of Pop Culture (MoPOP), located at the Seattle Center, celebrates the city’s creative spirit with exhibits on everything from Nirvana and Jimi Hendrix to science fiction and gaming.

To visit Barcelona is to embrace both the past and the future. There is much to do and see in this cosmopolitan capital of Catalonia, from medieval structures to beaches to UNESCO Heritage Sites by Antoni Gaudí and Lluís Doménech i Montaner.

Ancient history comes alive in Athens, the capital of Greece. Gaze in wonder at the Acropolis and its iconic crown, the Parthenon. Take a deeper dive into the past and visit both the Acropolis Museum and the National Archaeological Museum, which house fascinating artifacts from this ancient city.