Things to Do in Trieste

The extravagant 19th-century Miramare Castle (Castello di Miramare) is set on the Grignano promontory above the Gulf of Trieste and has beautiful interiors and 54 acres of grounds and botanical gardens. Home to the Habsburg family until the 20th century, this sumptuous noble residence offers a fascinating glimpse into royal life.

Trieste’s magnificent Piazza Unità d'Italia, also known as Piazza Grande, facing the Adriatic Sea, is one of the most beautiful squares in Italy. This large open space—the largest seafront square in Europe—lined with sumptuous 19th- and 20th-century palaces and historic cafés, is the very heart of the city.

The massive Torri di Slivia Cave is one of the most spectacular natural sights on Trieste’s karst plateau, which sits on the Italian-Slovenian border. Head more than 300 feet (100 meters) below ground to explore caverns filled with otherworldly stalactites and stalagmites formed over millennia.