A Place Unlike Any Other
On the northwest coast of Capri, set into the base of a limestone cliff, is a cave entrance so small that the only way in is by lying flat in a wooden rowboat while an oarsman times the waves and pulls you through. What waits inside has been stopping travelers cold for nearly two hundred years: water that glows an intense, luminous blue – not from any lamp or trick of the eye, but from sunlight refracted through an underwater opening in the cave floor, bouncing off white limestone and transformed into pure, saturated light. The Blue Grotto, known in Italian as the Grotta Azzurra, is one of Italy’s most iconic natural wonders, and it earns the title.
Getting There
The cave sits on Capri’s northwest coast and is accessible two ways: by boat from Marina Grande, the island’s main port – a ten-minute ride with views of the cliffs and villas along the way – or by land from the village of Anacapri, either on foot down a 3.5-kilometer path or by the small bus that runs from Anacapri’s central square to the cave entrance. Either way, once at the water, visitors must transfer to one of the official small rowboats that ferry people through the low entrance. Access is entirely weather-dependent: when the swell rises and the gap closes, the grotto closes too – sometimes for hours, sometimes for the day. Morning visits offer the best light and the shortest wait times.
The Experience Inside
The cave measures roughly sixty meters long and twenty-five meters wide, with a ceiling that climbs as high as fourteen meters. Once inside, the quality of light is the first and overwhelming impression – an electric blue that rises from the water itself, shifting and intensifying as the sun moves. The oarsmen know every angle of it. Many will pause to sing, and the acoustics inside the cave make the moment memorable in a way that photographs simply cannot capture. At the back of the main chamber, three smaller passages branch off into what locals call the Room of Names, a wall of signatures left by visitors over the past two centuries.
Two Thousand Years of History
The cave’s history is far older than its modern fame. During the reign of the emperor Tiberius, who governed Rome from Capri between 14 and 37 AD, the cave served as a private marine nymphaeum – a ceremonial bathing space dedicated to the gods of the sea, decorated with marble statues. A Roman villa, the Villa di Gradola, sat directly above it on the cliff, and the emperor is believed to have swum in these waters. In the 1960s, underwater excavations recovered three ancient Roman statues from the cave floor – figures of Neptune and Triton – and a 2009 survey found seven additional statue bases still resting below the surface. Those recovered statues are now displayed at the Casa Rossa museum in Anacapri and the Charterhouse museum in Capri town. After the fall of Rome, the cave fell into centuries of disuse. Local fishermen called it the Gradola and avoided it entirely, convinced it was haunted by spirits and demons. This reputation persisted until April 18th, 1826, when German writer August Kopisch and painter Ernst Fries were guided inside by a local fisherman. Kopisch’s account, published widely across Europe, named it the Blue Grotto and set off the wave of tourism that continues today.
Where to Eat Nearby
For dining after a visit to the cave, the village of Anacapri offers the closest options. Il Riccio is perched on the cliffs just above the cave entrance – Capri’s only Michelin-starred restaurant, specializing in fresh local seafood with an extraordinary dessert room known as the Temptation Room. Ristorante La Zagara, set in a garden of lemon trees in Anacapri, serves grilled fish, homemade pasta, and seasonal local produce in a quieter, more intimate atmosphere. For something lighter and far more affordable, Capri Cakes is a beloved local pastry shop widely considered the best value on the island.