Civitavecchia is a coastal town northwest of Rome, in Italy. Built in the 2nd century, the Port of Civitavecchia still retains some of its original features, like the Roman Dock. The port area also includes the 16th-century Michelangelo Fort. Nearby, the National Archaeological Museum displays bronze and ceramic artifacts. Northeast of town are the Terme Taurine, the ruins of a Roman thermal bath complex

Palermo is the capital of the Italian island of Sicily. The 12th-century Palermo Cathedral houses royal tombs, while the huge neoclassical Teatro Massimo is known for opera performances. Also in the center are the Palazzo dei Normanni, a royal palace started in the 9th century, and the Cappella Palatina, with Byzantine mosaics. Busy markets include the central Ballarò street market and the Vucciria, near the port.

Ibiza is one of the Balearic islands, an archipelago of Spain in the Mediterranean Sea. It's well known for the lively nightlife in Ibiza Town and Sant Antoni, where major European nightclubs have summer outposts. It’s also home to quiet villages, yoga retreats and beaches, from Platja d'en Bossa, lined with hotels, bars and shops, to quieter sandy coves backed by pine-clad hills found all around the coast.

Valencia is the capital of the autonomous community of Valencia and the third-most populated municipality in Spain, with 807,693 inhabitants. It is the capital of the province of the same name.

Marseille, a port city in southern France, has been a crossroads of immigration and trade since its founding by the Greeks circa 600 B.C. At its heart is the Vieux-Port (Old Port), where fishmongers sell their catch along the boat-lined quay. Basilique Notre-Dame-de-la-Garde is a Romanesque-Byzantine church. Modern landmarks include Le Corbusier’s influential Cité Radieuse complex and Zaha Hadid’s CMA CGM Tower.

Portofino is a fishing village on the Italian Riviera coastline, southeast of Genoa city. Pastel-colored houses, high-end boutiques and seafood restaurants fringe its Piazzetta, a small cobbled square overlooking the harbor, which is lined with super-yachts. A path leads from the Piazzetta to Castello Brown, a 16th-century fortress and museum with art exhibitions and panoramic views of the town and the Ligurian Sea.