Silver Ray: 18-Night Mediterranean from Barcelona

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.

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.

Cartagena is a historic port city of about 215,000 people on Spain's southeastern Mediterranean coast, in the Murcia region. Founded by the Carthaginians in 227 BC (as Carthago Nova), the city has been contested by Carthaginians, Romans, Moors, and Spanish kingdoms, and its layered history shows in the archaeological sites scattered through the compact center.

Alicante is a mid-sized Spanish city of about 330,000 people on the Costa Blanca in southeastern Spain. It's a working Mediterranean city that happens to have a beautiful waterfront, a hilltop castle, and some of the best weather in Europe.

Ibiza is one of Spain's Balearic Islands in the western Mediterranean, about 150 km off the coast of Valencia. The cruise port is in Ibiza Town (Eivissa), on the southeast coast of the island.

Palma de Mallorca cruise port is one of the busiest in the Mediterranean and the main cruise gateway to the Balearic Islands. Palma sits on the south coast of Mallorca, the largest of the Balearics, about 250 kilometers south of Barcelona.

Monaco is a sovereign city-state on the French Riviera, just 2 square kilometers in size with about 39,000 residents, making it the second-smallest country in the world. Monte Carlo, its most famous district, is synonymous with wealth, casinos, and Formula 1 racing.

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.

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.