Landlocked but by no means limited, Tennessee boasts Graceland and Sun Records in Memphis, and the Grand Ole Opry in Nashville. River cruises are becoming increasingly popular here, with Memphis being a key itinerary point on the Mississippi River.

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.

A true gem on the Caribbean coast, the port city of Cartagena (Cartagena de Indias) welcomes visitors with its charming old town, colonial buildings, and exceptional beaches. A popular cruise ship stop, many seafarers find themselves honorary Cartagenans, as they stroll shady, cobblestone lanes and gaze upon impressive churches.

This thriving port city has so much to offer, including several museums, the beautiful historic quarter Porto Antico and La Lanterna. This lighthouse is Genoa's best known landmark and provides stunning views over the port and bay.

Nestled in the heart of Greece's Thessaly region, Kalabaka is a charming town renowned for its striking natural and historical attractions. Most famous for its proximity to the Meteora rock formation, Kalabaka offers a unique blend of geological marvel and spiritual history.