Don’t just explore the surface of the earth — discover what's below it too. See mysterious natural formations and patterns in the deep, dark corners of Grotta Gigante.
This natural underground attraction is in Sgonico, a place that has plenty of things going for it! Piazza Unita d'Italia, Miramare Castle, and Canal Grande di Trieste are other good sightseeing options nearby when you're done at Grotta Gigante.
