Blue Grotto Sea Cave, Capri

The Blue Grotto (Grotta Azzurra), Capri

The physics of the Blue Grotto is worth understanding before you go. Sunlight enters through an underwater opening about 1.5 metres wide and refracts through the water column, reflecting off the white limestone floor. The cave itself is dark; the water is lit from below. The result is an intense, luminescent blue that is not ambient light but light coming up from under the surface. Romans knew about this cave – Emperor Tiberius reportedly used it as a private swimming pool. The blue light phenomenon was “rediscovered” in 1826 by a German painter and a local fisherman.

You reach the grotto by rowboat from Marina Grande, lying back as the boat is pulled through the entrance by a chain handle. The passage is about 1 metre high and 1.5 metres wide; you duck flat in the boat. Inside, the space opens to a cave about 60 metres long and 25 metres wide. You get around 5-10 minutes with the boatman before you are pulled back out. The entire experience, from boat hire to return, takes about 30-45 minutes.

Cost: around €18 per person total, including the motorboat from Marina Grande and the rowboat into the cave. The boatmen who row you inside also sing; tipping is expected.

Important Caveats

The Blue Grotto is closed whenever the sea is even moderately rough – the entrance swell makes access impossible. It is also closed from early afternoon because the light angle changes and the blue effect diminishes significantly. Morning, ideally before 10:00, gives the best light. In high summer (July-August), the queue for boats is significant; being first at Marina Grande at opening time makes a real difference.

This is genuinely beautiful for the 5-10 minutes you are inside. It is also expensive relative to the time, crowded in peak season, and weather-dependent. Go with appropriate expectations.

The Rest of Capri

The island rewards more time than the Grotto visit alone. The gardens of Villa San Michele, built by Swedish physician Axel Munthe in the late 19th century, have views over the bay of Naples from the northern end of the island that rival anything available from a higher elevation. The site is open to visitors (around €8 admission) and the building contains Munthe’s personal collection of Roman sculpture.

Monte Solaro, at 589 metres the highest point on the island, is accessible by chairlift from Anacapri (around €14 return) or by a 45-minute walk. The view from the summit takes in the full Bay of Naples, Mount Vesuvius, and on clear days the Amalfi Coast.

Capri Town (in the east of the island) is expensive and tourist-facing – the designer shops around the Piazzetta are the most concentrated luxury retail in southern Italy. Anacapri, at higher elevation on the western side, is quieter and gives better access to Monte Solaro.

Getting There

Hydrofoils from Naples Molo Beverello run every 40-50 minutes and take 40-45 minutes. Ferries take longer but are cheaper and fine for luggage. From Sorrento, the crossing is 25-35 minutes. Advance booking is strongly advised in summer.

Where to Stay

Capri is expensive. Hotel Quisisana in Capri Town is the grand dame property, expensive and well-positioned. For something quieter and more reasonable, smaller hotels in Anacapri offer the island experience without the Piazzetta premium.