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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
  • The cave is immense! I recommend everyone to devote an hour to visit this wonder. Federica guide was great, he repeated everything in English perfectly even for foreign tourists and she enthralled with details and notions that we did not know. Brava!
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  • I was recently visiting for the first time, I found myself faced with this mastery of nature, outside the weather was bad and it was raining, once with driving emotion that you was trying to get into this show left no room for any negativity ... Everything was magnificent and unforgettable stay, would recommend anyone to go there especially for nature lovers. Also the tour guide was funny and as should be every self-respecting guide well versed and never dull and boring ... Soon the cave giant!
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  • Largest tourist cave in the world. Imposing and majestic. Difficult to understand the real dimensions but definitely. A walk in the cave down one side and up the other side. You stay in Ecstasy from what nature can create.
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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.