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.

Plan a trip to see Grotta Gigante

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Savoia Excelsior Palace Trieste – Starhotels Collezione

Trieste City Centre

per person

Oct 4 - Oct 10

found 1 day ago

Roundtrip non-stop flight included

Charlotte (CLT) to Trieste (TRS)

9.6/10 Exceptional! (1,007 reviews)

The Savoia Excelsior Palace Trieste provided an overall excellent experience. The check in was extremelly fast. They stored our luggage for us to have lunch while waiting for our check in time. Staff was extremelly friendly and helpful. They recommended excellent places to visit within walking distance as well as dining that was superb. Great location. We felt safe walking at night. Great views, great hotel. Higly recommended!

Reviewed on Jul 30, 2025

DoubleTree by Hilton Trieste

Trieste City Centre

per person

Sep 12 - Sep 16

found 1 day ago

Roundtrip flight included

El Paso (ELP) to Trieste (TRS)

9.4/10 Exceptional! (417 reviews)

Beautiful old building. Room was huge with a great bathroom.

Reviewed on Jul 27, 2025

Hotel Continentale

Trieste City Centre

per person

Sep 12 - Sep 16

found 1 day ago

Roundtrip flight included

El Paso (ELP) to Trieste (TRS)

9/10 Wonderful! (355 reviews)

Can’t fault this hotel. Really lovely. So central. Easy to walk to places. It’s in a pedestrianised street. Had a lovely dinner there one night and watched my tiramisu being made in front of me. Definitely recommend this hotel x

Reviewed on Jul 12, 2025

Browse tours and tickets to explore Grotta Gigante

Tours & day trips

See all 57 activities

Postojna Cave & Predjama Castle from Trieste

Free cancellation available

Private & custom tours

See all 23 activities

Experience Slovenian Coast line with Wine Tasting from Trieste

Free cancellation available

Food, drink & nightlife

See all 10 activities

Dining experience at a local's home in Trieste

Free cancellation available

Adventure & outdoor

See all 3 activities

Zipline Over the Sava River

Free cancellation available

Popular places to visit

Victory Lighthouse

Find out about the history of Trieste when you spend time at Victory Lighthouse. While you're in the area, stroll along the seaside.

Miramare Castle

4.5/5(27 reviews)

Learn about the local history of Grignano when you spend time at Miramare Castle. While you're in the area, stroll along the seaside.

Trieste showing heritage architecture, an administrative buidling and a square or plaza

Piazza Vittorio Veneto

You can find out about the history of Trieste with a visit to Piazza Vittorio Veneto. While you're in the area, stroll along the seaside.

Trieste which includes boating, a river or creek and heritage architecture

Civico Museo Teatrale Carlo Schmidl

You can browse the exhibits at Civico Museo Teatrale Carlo Schmidl, a museum with a storied past, during your travels to Trieste. While you're in the area, stroll along the seaside.

Tempio Mariano di Monte Grisa

You can find out about the history of Contovello with a visit to Tempio Mariano di Monte Grisa. While you're in the area, stroll along the seaside.

Casa Carsica

You can browse the exhibits at Casa Carsica, a museum with a story of its own, during your trip to Repen. While you're in the area, stroll along the seaside.