Costa Diadema: 10-Night Western Mediterranean

Savona cruise port is the main homeport for Costa Crociere (Costa Cruises), Italy's largest cruise line. Savona sits on the Italian Riviera (Liguria region) about 45 kilometers southwest of Genoa and 170 kilometers north of Nice.

Barcelona cruise port is the busiest in the Mediterranean, handling millions of passengers a year across multiple terminals. The city behind it earns that traffic.

Tangier sits at the northwestern tip of Africa, where the Mediterranean meets the Atlantic and Morocco looks across the Strait of Gibraltar at Spain, just 14 km away. The city has about 1.

Cadiz is the actual cruise port marketed as "Seville (Cadiz)" by cruise lines because Seville, Spain's fourth-largest city, is the primary day-trip draw from this port. Cadiz itself is one of Europe's oldest continuously inhabited cities, perched on a narrow peninsula jutting into the Atlantic on Spain's southwestern coast.

Gibraltar is a British Overseas Territory at the southern tip of the Iberian Peninsula, a 6.7-square-kilometer enclave dominated by the Rock of Gibraltar, a 426-meter limestone monolith that guards the western entrance to the Mediterranean.

Malaga cruise port is the main gateway to Spain's Costa del Sol and Andalusia. The city sits on Spain's southern coast, about 130 kilometers west of Granada and 50 kilometers east of Marbella.

Marseille cruise port is France's busiest and one of the major stops on western Mediterranean itineraries. The city is France's second largest and its oldest, founded by Greek sailors over 2,600 years ago, and it has a rougher, more authentic edge than the polished Riviera towns further east.