Genoa, La Spezia, Naples, Palma de Mallorca, Barcelona

Genoa is a port city in the Northwest of Italy. Home to the Genoa Aquarium, famous for having the largest exposition of biodiversity in Europe, the city is also a great place to visit for anyone interested in architecture.

La Spezia is sometimes thought of as nothing but a large, industrialized naval port en route to the Cinque Terre and Portovenere, but it does possess some charm, and it gives you a look at a less tourist-focused part of the Riviera.

Its palm-lined promenade, fertile citrus parks, renovated Liberty-style palazzos, and colorful balcony-lined streets make parts of La Spezia surprisingly beautiful.

Monday through Saturday mornings, you can stroll through the fresh fish, produce, and local-cheese stalls at the outdoor market on Piazza Cavour, and on Friday take part in the busy flea market on Via Garibaldi. There's also Porto Mirabello, a newly built tourist port with a pool club, shops, and several restaurants that overlook the fleet of super-yachts.

Naples, in the Campania region, is Italy's third largest city. Its claim to fame is the spectacular location along one of the world's most splendid bays, backed by the perfect cone of Mount Vesuvius. In addition to its beautiful setting, Naples' surprises with other outstanding attractions such as the Royal Palace, San Carlos Opera House, the impressive National Archaeological Museum and the Castel Nuovo, dating from the 13th-century. The city's central area is best explored on foot. Chaotic traffic conditions make driving around the city a very frustrating experience. Naples provides a convenient starting point for trips to such favored destinations as Pompeii, Herculaneum and Mount Vesuvius. The Isle of Capri can be reached via a 45-minute hydrofoil service. The region of Campania was home to Greeks settlers some 300 years before Rome was founded. Pompeii, too, was a Greek town before being conquered by the Romans during the 5th century BC. It was under the Romans that Pompeii flourished and grew prosperous. When Mount Vesuvius erupted in 79 AD, the population of 20,000 was wiped out, but dozens of buildings were preserved under layers of cinder more than 20 feet deep. The most important finds from Pompeii are displayed in Naples' National Archaeological Museum. A visit here will no doubt enhance a visit to ancient Pompeii.

Palma de Mallorca, the largest city on the island of Mallorca, is the capital of Spain’s Balearic Islands and a popular destination among Mediterranean cruisers. The sun-kissed island combines a vibrant city centre and shopping areas with a charming old town, known in Spanish as El Casco Antiguo, where many tourist hotspots can be found. With stunning views allied to great beaches, Gothic, Moorish and Renaissance architecture, as well as tasty regional food, Palma ticks all the boxes.

The infinite variety of street life, the nooks and crannies of the medieval Barri Gòtic, the ceramic tile and stained glass of Art Nouveau facades, the art and music, the throb of street life, the food (ah, the food!)—one way or another, Barcelona will find a way to get your full attention. The capital of Catalonia is a banquet for the senses, with its beguiling mix of ancient and modern architecture, tempting cafés and markets, and sun-drenched Mediterranean beaches. A stroll along La Rambla and through waterfront Barceloneta, as well as a tour of Gaudí's majestic Sagrada Famíliaand his other unique creations, are part of a visit to Spain's second-largest city. Modern art museums and chic shops call for attention, too. Barcelona's vibe stays lively well into the night, when you can linger over regional wine and cuisine at buzzing tapas bars.