Seven Seas Mariner: 18-Night Mediterranean

Rome's cruise port is in Civitavecchia, a working port town about 80 kilometers northwest of the city. That distance is the single most important thing to understand about this stop.

Salerno is the eastern gateway to the Amalfi Coast, one of Italy's most celebrated stretches of coastline. Cruise ships dock at the Stazione Marittima in Salerno's port, a short walk from the city center and the starting point for trips along the legendary coastal road to Amalfi, Positano, and Ravello.

Messina cruise port sits at the northeastern tip of Sicily, directly across the narrow Strait of Messina from mainland Italy. Ships dock right at the city waterfront, making it one of the easiest Mediterranean ports to step off and explore.

Valletta cruise port is one of the most visually dramatic arrivals on any Mediterranean itinerary. Ships sail into the Grand Harbour, a deep natural inlet flanked by honey-colored limestone walls that rise straight out of the water, with Valletta itself perched on the peninsula above.

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.

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.

Split cruise port is the main gateway to central Dalmatia and one of the most remarkable cities in Croatia. The city is built around and inside Diocletian's Palace, a 1,700-year-old Roman fortress that the emperor built as his retirement residence around 300 AD.

Bari cruise port is the principal port of Italy's Apulia (Puglia) region on the Adriatic coast, about 450 kilometers southeast of Rome. Ships dock at the New Port, a short walk from Bari's old town (Bari Vecchia), a tangle of white-walled medieval streets wrapped around the cathedral and the Basilica of San Nicola.

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).