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Grotta Gigante, Sgonico

(4.7/5 based on 650+ reviews on the web)
The largest naturally occurring cavern in Europe, Grotta Gigante was discovered in 1840 during a search for underground water sources for the town’s aqueduct. Take a tour, available in Italian or English, and head down the 500 steps, past ancient stalactites and stalagmites, stopping to take in the views. After the tour, visit the nearby museum of speleology to learn more about the formation of the caves and see some interesting geological and paleontological finds, as well as a poster collection depicting the cave. To visit Grotta Gigante on your trip to Sgonico, use our Sgonico trip builder.
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Reviews
TripAdvisor
  • Cave a few kilometers from Trieste, from going there again! Are guided tours every hour and the tour lasts about an hour. the guide who escorted us was prepared, nice and very helpful. Cave beauty will leave you breathless!
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  • Beautiful cave, an enormous room "under the Earth" need to consider some time for visiting (guided) because you have to do quite a few steps and you stop at several points to admire the splendor of the cave
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  • Beautiful, really huge Cave - the man when one is nearby, should visit. Footwear - stairs are both but not slippery. summer sweater or vest not forget hmmm... I can go not nachvollziehen-the notes "you should be afraid of heights" after they always have fixed stairs and ;-) only - maybe that's why - you can never a chasm along of course pretty deep look ;-) I myself am overweight and athletic and had concerns about the levels of 500... YES! enters the puffing and sweating but there are breaks to rest - again and again and you shouldn't not stop him from the 500 steps up and down of each level is worth the experience.
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Google
  • The unexpected magnitude of the place along with its suggestive beauty, enhanced by a good use of artificial lighting made this visit a magic experience, for me. The ticket isn't cheap, but it's well worth it. The tour takes the better part of an hour, and it has many steps. The temperature inside is always cool so if you are visiting in the warmer months you should bring some extra clothing. Best thing to see around Trieste, in my opinion.
  • The scale is just unimaginable. Very special place. Glad we could share this moment with our eight year old. I would come to Trieste again just to see this magnificent Grotto! The guide was lovely too!
  • I have been here several times because I live in Trieste. I would definitely recommend to stop by because it is seriously HUGE and beautiful!
  • Huge cave. You have to do a lot of steps but it's amazing
  • Very interesting cave, not so long nor big, but I can stills say I liked it.