The Most Beautiful Caves in Italy
8 places · updated 14 October 2026
In short: By our ranking, the most beautiful caves in Italy are Blue Grotto, Capri, Neptune's Grotto and Frasassi Caves. The list covers 8 caves. Last updated 14 October 2026.
Italy is a country of limestone and sea, and both make caves. Karst plateaus in the north-east, the Apennine ridges and the plains of Puglia hide vast chambers dissolved by groundwater and filled with dripstone, while the coasts of Capri, Sardinia and the Salento are pierced by sea caves where light enters through the water. Some of these caves were known to the Romans; others were found only in the twentieth century, when cavers broke into chambers nobody had seen.
The Blue Grotto on Capri is entered by rowing boat through a low opening in the cliff, and inside, sunlight passing through an underwater gap turns the water an electric blue. On Sardinia's Capo Caccia, Neptune's Grotto opens at sea level beneath a steep stairway in the cliff, with a lake and columns of dripstone inside.
The Frasassi Caves in the Marche, discovered in 1971, include the Abisso Ancona, a chamber large enough to hold a cathedral. In Puglia, the Castellana Caves descend to the Grotta Bianca, known for its white crystal formations. The Grotta Gigante near Trieste has a central cavern 107 metres high, once listed as the largest show cave in the world. On the Salento coast, La Poesia is a natural pool of clear sea water inside a collapsed cave, linked to the open sea by an underground channel.
In this list
| # | Place | Type | UNESCO |
|---|---|---|---|
| 1 | Blue Grotto, Capri | Cave | |
| 2 | Neptune's Grotto | Show cave | |
| 3 | Frasassi Caves | Show cave | |
| 4 | Castellana Caves | Show cave | |
| 5 | Grotta Gigante | Show cave | |
| 6 | Grotta dell'Addaura | Cave | |
| 7 | grotta di Ispinigoli | Show cave | |
| 8 | La Poesia | Cave |
01 Blue Grotto, Capri
Grotta Azzurra
Italy · 31.4 km from Naples40.561° N 14.205° E
Elenagm · CC BY-SA 4.0 The grotto had a Roman past. Emperor Tiberius, who moved to Capri in AD 27, seems to have used it as a nymphaeum, a marine sanctuary, adorned with statues; in 1964 statues of Neptune and Tritons were raised from its floor and are now shown at Anacapri, and bases of seven more were found in 2009. Local people long avoided the cave, said to be haunted by witches and monsters, until the German writer August Kopisch and the painter Ernst Fries were brought here by a fisherman in 1826; Kopisch's account made it famous across Europe. Behind the main chamber, passages lead to the Sala dei Nomi, the Room of Names, scratched with the signatures of centuries of visitors.
Did you know? Kopisch published his account, The Discovery of the Blue Grotto on the Island of Capri, in 1838, twelve years after his visit.
02 Neptune's Grotto
Grotte di Nettuno
Italy · 39.2 km from Sassari40.565° N 8.160° E
Holger Uwe Schmitt · CC BY-SA 4.0 Until the mid-20th century the only way in was by boat. The Escala del Cabirol ("goat's stairway"), 654 steps cut into the face of Capo Caccia and designed by the Sardinian architect Antoni Simon Mossa, changed that in the 1950s. The descent is spectacular; the climb back up is the part people remember. The waters around the headland hide many more caves, the largest and best known being the Nereo Cave, a favourite with divers. The grotto itself served as a film set in the summer of 1978, for the Italian fantasy film Island of the Fishmen.
Did you know? One chamber, the Organ Hall, is also called the Smith Hall after an English captain who was among the cave's first explorers in the 19th century.
03 Frasassi Caves
Grotte di Frasassi
Italy43.401° N 12.963° E
Image by nadkol19 from Pixabay The caves have a second life as a laboratory. In 1986 the sociologist Maurizio Montalbini spent 210 days alone underground here in a study of the body's clock, and emerged believing that only 79 days had passed. More recently microbiologists from Penn State have sampled the dark, stringy biofilms growing in underground lakes such as Lago Verde, looking for clues to how life survives without light or oxygen. Near the entrance to the gorge stand two sanctuaries that deserve a detour: Santa Maria infra Saxa, set into the rock face and dating to the 11th century, and the small neoclassical temple of 1828 known as the Tempietto del Valadier.
Did you know? Those snottites rank among the least diverse natural microbial communities known, sometimes consisting of just one to six kinds of bacteria.
04 Castellana Caves
Grotte di Castellana
Italy · 35.2 km from Bari40.876° N 17.149° E
Alessandro e Damiano · CC BY 4.0 So the caves effectively have two discoverers, arriving by two different routes seventeen months apart — the credentialed speleologist called in to do a routine survey, and the local worker who kept going after the expert had left.
Did you know? The caves are carved into Upper Cretaceous limestone laid down around 90 million years ago.
05 Grotta Gigante
Italy · 6.7 km from Trieste45.709° N 13.764° E
Andrzej Otrębski · CC BY-SA 4.0 Finds from the exit gallery show that people used the cave long before it was explored: flint arrowheads and human remains from the late Neolithic, a Bronze Age dagger and pottery, Roman coins of the first century AD. Systematic exploration began in 1840 with Antonio Federico Lindner, who was searching the Karst for underground water to supply the growing city of Trieste. The cave was mapped in 1897 and opened to the public by the Club Touristi Triestini in 1908.
Did you know? A side branch of shafts drops to 250 metres below the surface, ending only about 20 metres above sea level; its exploration was completed in 2007.
06 Grotta dell'Addaura
Italy · 6.6 km from Palermo38.186° N 13.353° E
Bjs · CC0 What the central scene means remains open. Some scholars see acrobats or dancers performing; others a ritual, perhaps an initiation or a sacrifice, pointing to lines that may be cords tied around the necks of the two arched figures; Bovio Marconi herself suggested an erotic reading. Two of the surrounding figures seem to wear masks, which has encouraged talk of shamans. Palermo, spread along the bay below, is the capital of Sicily, a city layered with Phoenician, Arab, Norman and Baroque history, and Monte Pellegrino has been its landmark for millennia; Goethe, travelling through Sicily in 1787, called it the most beautiful headland in the world.
Did you know? The engravings were exposed after an accidental explosion of munitions stored in the caves during the Second World War.
07 grotta di Ispinigoli
Grotta di Ispinigoli
Italy40.320° N 9.600° E
SehLax · CC BY 2.5 For generations shepherds used the sheltered terrace at the entrance as a pen for their flocks. Speleologists began exploring the cave in the 1950s, and in 1974 it was fitted with paths and lighting and opened to visitors. It lies in the municipality of Dorgali, a town on the eastern edge of the Supramonte whose seaside hamlet, Cala Gonone, looks out over the Gulf of Orosei. Archaeological finds from the cave are kept in Dorgali's own museum.
Did you know? A shaft called the Abyss of the Virgins drops roughly 60 metres below the main hall.
08 La Poesia
Grotta della Poesia
Italy · 25.2 km from Lecce40.286° N 18.430° E
Psymark · CC BY-SA 4.0 The caves lie within Roca Vecchia, one of the most important archaeological sites in southern Apulia. Excavations have uncovered massive Bronze Age fortifications of the 15th to 11th centuries BC, burned and rebuilt more than once, with finds recalling Minoan and Aegean models, and a later Messapian town of the 4th and 3rd centuries BC, probably the place known in Latin as Thuria Sallentina. On the headland stand the ruins of a medieval citadel attributed to Walter of Brienne in the 14th century and a coastal watchtower built in 1568, when the town had already been abandoned; its people moved inland to found Roca Nuova around 1480, after raids from the sea.
Did you know? Roca has yielded the largest group of Mycenaean pottery ever found west of mainland Greece, along with some of southern Italy's best-preserved Bronze Age architecture.
How this list is ranked
Places are chosen for how they look, not for how famous they are: each one has its own description and a photograph credited to its author. The order is a single world ranking that weighs the beauty of the place in curated photography together with how widely it is documented — the number of language editions of its encyclopedia article and how often that article is read in a year. The list is rebuilt as places are added, so the order and the counts on this page are always current.
Questions people ask
- What are the most beautiful caves in Italy?
- On our list, Blue Grotto, Capri ranks first, followed by Neptune's Grotto and Frasassi Caves.
- Why is the Blue Grotto so blue?
- Sunlight enters the cave mostly through a submerged opening below the entrance, passes through the sea water, which absorbs the red light, and lights the cave from below with blue. Objects in the water appear silvery.
- How do you reach Neptune's Grotto?
- By boat from Alghero along the coast, or on foot down the Escala del Cabirol, a stairway of more than 650 steps cut into the cliff of Capo Caccia.
- How big is the Grotta Gigante?
- Its main chamber is 107 metres high, 65 metres wide and 130 metres long. It entered the Guinness Book of Records in 1995 as the world's largest show cave.
- How many caves are on this list in Italy?
- The list covers 8 caves.