The dazzling capital of the Czech Republic, the explorable Prague has fittingly been nicknamed "the City of a Hundred Spires." Halved by the Vltava River and notable for architecture Baroque, Renaissance, and Gothic, visitors will find much to take in here.

London is among the world's most visited cities, with countless attractions and a history stretching back two millennia. Visitors will discover historic iconic structures like Westminster Abbey, Big Ben, and Tower Bridge, as well as recent marvels such as London Eye, a giant observation wheel that offers breathtaking views of the whole city.

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.

A frequent stop for Caribbean cruises, this Central American destination will delight you with local flea markets, museums, and delicious eats.

Regensburg, Germany’s medieval gem, will transport you to a bygone era. The site of both Celtic and Roman settlements, Regensburg flourished in the Middle Ages.