Rome offers endless choices: enjoy street performers at the Spanish Steps, wine and people-watching in colorful Trastevere, or the city's rich history and architecture. St. Peter's Basilica is a full-day visit, with the Sistine Chapel and panoramic views from the dome. Don't miss the Trevi Fountain, the Colosseum, and Aventine Hill, which overlooks the Imperial Palaces ruins and the Circus Maximus.

Spend a day exploring the fabulous ruins of ancient Pompeii and Herculaneum with their stunning temples, frescoes and mosaics. Explore fascinating Naples and its famed museums, visit charming Sorrento or take a boat trip to the beautiful Isle of Capri.

Messina, Sicily's third-largest city, was a key medieval port for knights heading to the Crusades. Though extensively rebuilt, it still has major landmarks, especially the cathedral with its unusual astronomical clock, the 12th-century Catania Church, and the ornate Teatro Vittorio Emanuele. It's also a starting point for day trips to Mt. Etna's Crateri Silvestri.

Malta's capital and major port, Valletta was inscribed as a UNESCO World Heritage Site in 1980. Highlights include the 19th-century Mosta Dome, San Anton Palace Gardens in Attard, Lija and Balzan, and the sea views from Dingli Cliffs. Valletta also makes a good base for day trips to Mdina, with St. John's Baroque Cathedral, and Rabat, once part of Roman Melita, with its archaeological sites.

Split is the largest Croatian city on the Adriatic coast. It is famous for Diocletian's Palace, built as the Roman emperor's retirement home; its stone structure, grounds, and cellars are a major highlight. Other sights include the Cathedral of St. Duje, on the remains of an ancient shrine said to be the world's oldest, and the Mestrovic Gallery, featuring works by Croatian sculptor Ivan Mestrovic in his former home and atelier.

Koper charms with its marina, red-tiled roofs, seaside cafes, and old Venetian mansions from its days as a jewel of Venice's overseas empire. Around Titov Square, see the Praetorian Palace in Venetian Gothic style. Nearby excursions include the UNESCO-listed Škocjan Caves or a trip through the Slovenian countryside to Ljubljana, ending with a river cruise past picturesque historic buildings.

From Fusina, journey to Venice, where you'll witness the Grand Canal, lined with enchanting Renaissance architecture. Art lovers can visit the Peggy Guggenheim Collection or the Doge's Palace, a Gothic masterpiece. Savor Venetian cuisine at a traditional trattoria, sampling fresh local dishes. History enthusiasts can also peruse St Mark's Basilica, a marvelous 18th-century cathedral adorned with sculptures, mosaics and bas-reliefs representing Italian sophistication.