Norwegian Sun: 7-Night Europe

Ravenna is a mid-sized city of about 160,000 people in Italy's Emilia-Romagna region, sitting on the Adriatic coast south of Venice. The city served as the capital of the Western Roman Empire, the Ostrogothic Kingdom, and the Byzantine Exarchate, leaving it with the finest collection of early Christian and Byzantine mosaics anywhere outside Istanbul.

Dubrovnik cruise port is the southern gateway to Croatia's Adriatic coast and one of the most visually striking stops in the Mediterranean. Ships dock at Port Gruž, about 3 kilometers northwest of the Old Town, with the walled medieval city perched on a rocky peninsula jutting into the sea.

Kotor cruise port is one of the most visually spectacular arrivals in the Adriatic. Ships sail through a deep fjord-like bay (Boka Kotorska) surrounded by limestone mountains that rise steeply from the water, with the walled medieval town of Kotor tucked at the base.

Corfu cruise port is one of the most visited stops on Eastern Mediterranean and Greek Islands itineraries. The island sits off Greece's northwestern coast, just a short ferry ride from the southern tip of Albania, and has a distinct cultural identity shaped by centuries of Venetian, French, and British rule rather than the Ottoman history that dominates other Greek islands.

Katakolon is a small fishing village on the western coast of the Peloponnese, with a permanent population of only about 700 people. It exists on cruise maps for one reason: ancient Olympia, the birthplace of the Olympic Games, is 45 minutes inland.

Mykonos cruise port is one of the most instantly recognizable stops in the Greek islands. Whitewashed cube buildings cascade down hills to the Aegean Sea, blue-domed churches punctuate the skyline, and windmills stand sentinel on the ridge above Mykonos Town (Chora).

Santorini cruise port is one of the most visually striking arrivals in cruising. Ships anchor in the flooded caldera of a volcanic crater, with the whitewashed villages of Fira and Oia perched dramatically 1,000 feet above on the cliff edge.