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.