Trieste to Grotta Gigante and Postojna Cave: Day trip

The cave Grotta Gigante is one of the most fascinating sites in the Italian region of Friuli-Venezia Giulia. The floors and ceilings are covered with stalactites, stalagmites, and other natural compounds. The large main underground chamber, situated near Borgo Grotta Gigante, was entered in the Guinness Book of World Records in 1995 as the world’s largest show cave. The hour long guided tour is 500 steps up and 500 steps down, offering you insight on the rare beauty of this magnificent cave.

Postojna is a 24,120m long cave in southwestern Slovenia, making it the second longest cave in the country. The cave is a 24-kilometer network of passages, galleries, and chambers. Begin your visit aboard the cave train, which takes you on a 2-kilometer ride deep into the caves. After the ride, you’ll go comfortably on foot to explore more of the caves. Electric lighting allows you to take in all the splendor of the towering limestone formations. Guided tours are available and last approx. 1.5 hours. Audio guides are also available in 15 different languages.