Southeast Spain's seaport of Cartagena is a large naval base on the Mediterranean coast. The city was founded in 220 B.C. and boasts Roman ruins, mosaics and murals.

Bergamo, in northern Italy’s Lombardy region, is a city of striking contrasts, divided into the historic upper town and the modern lower town. The upper town, perched on a hill and encircled by Venetian walls, offers cobblestone streets, medieval architecture, and panoramic views over the surrounding plains and the distant Alps.

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.

Fuengirola is a coastal town in southern Spain, located on the Costa del Sol in the province of Málaga. It stretches along a wide sandy shoreline backed by a dense urban area of apartments, hotels, and promenades.

Replete with windmills and old-world charm, the village of Kinderdijk lies east of Rotterdam on the Lek River and is a popular stop for European river cruises. Home to the largest concentration of old windmills in the Netherlands, Kinderdijk was designated a UNESCO World Heritage Site in 1997.