The Grotta Azzurra — Blue Grotto in English — owes its unearthly cobalt glow to a submerged cavity that refracts sunlight through seawater, projecting an electric sapphire radiance onto the limestone vault above.
The 60-metre-long cavern has drawn visitors since Roman Emperor Tiberius built a private nymphaeum at its entrance in the 1st century CE, using the grotto as a secluded marine pavilion. Rediscovered by European painters and writers in 1826, the cave became the centrepiece of Capri's 19th-century Grand Tour mythology, its iridescent interior immortalised in watercolours by German Romantic artists and travelogues by Hans Christian Andersen.
Today the Blue Grotto remains Capri's most sought-after natural landmark, accessible only by sea through a metre-high opening that admits four-person rowboats at calm tide. Visitors transfer from motorboats to traditional wooden scafi rowed by licensed oarsmen, who duck under the cave mouth while passengers recline flat against the gunwales. Inside, the refracted light transforms the water into liquid lapis lazuli, a phenomenon visible only when the sea is placid and the sun angled correctly — typically between late morning and early afternoon. The entrance fee of 19 euros covers both the rowboat transfer and the brief guided passage through the grotto, administered by the Cooperativa Battellieri di Capri under concession from the Italian Ministry of Culture.
A blue grotto capri tour from positano departs directly from the Amalfi Coast, eliminating the ferry transfer to Marina Grande and the subsequent motorboat queue at Anacapri. These coastal cruises typically circumnavigate the island, passing the Faraglioni rock stacks, the Natural Arch, and the White Grotto before arriving at the Blue Grotto's northwest face. Weather and tide permitting, passengers disembark into the waiting rowboats for the cave transit, then rejoin the main vessel for the return leg along Capri's southern cliffs. The proximity of Positano to the grotto's approach — roughly 40 minutes by gozzo or similar coastal craft — makes the Amalfi departure the most efficient routing for visitors already based along that stretch of coast.
The cave remains sensitive to wind and swell; east or south winds can close the grotto for days at a time, particularly during autumn and winter months. Operators monitor marine conditions in real time and typically offer alternative itineraries or full refunds when the cave is inaccessible. Because the rowboat transfer and interior passage are regulated by tide and queue length, total grotto time rarely exceeds five minutes per boat, a brevity that has sparked persistent debate about the experience's value relative to its cost and waiting time.
8 hr
