There are more than 10 000 documented caves in Italy. Those open to visitors can usually be seen on a guided tour. Special lighted walkways have been built inside most of these caves and some include a number of stairs. Here is a list of the most famous caves in Italy.
- Grotta Gigante. This is a giant cave which got into the Guinness book of world records in 1995 as the largest tourist cave in the world. It is located in Friuli-Venezia Giulia region, just 10 km from the city of Trieste. It has internal formations of Colonna reaching up to 12 meters high. There is also an interior tunnel which is reached through stairs on a downhill tunnel.
- Monte Cucco Cave. This is one of the deepest caves in the world. The cave is located in the Umbria region within the Monte Cucco Park. The tourists are asked to choose among three difficulty levels during tour guides.
- Frasassi Caves. These are series of caves forming the Europe’s largest known cave system. They have internal chambers with magnificent stalactites and stalagmites. There is a chapel that was built by architect Giuseppe Validier about 1500 meters from the caves entrance in 1828.
- Monte Corchia cave. This is a 70 km stretch forming an underground cave which is also referred to as the empty mountain. It has several formations of stalagmites, stalactites and underground lakes.
- Sassi Caves. The caves form an ancient dwelling of an Italian city called Matera which is also referred to as the hidden city due to villages curved on the rock in the cave.
- Grotta di Nettuno. It was discovered by local fishermen in the 18 th century. The cave extends for about four kilometers to include an underwater extension. Grotta di Nettuno is located at the base of the cliff on the Sardinia Island.