Blue Grotto (Grotta Azzurra) – Capri, Italy

The Blue Grotto is Capri’s most famous natural wonder, known for its glowing electric‑blue water that feels almost otherworldly when you see it in person. Sunlight reflects through an underwater opening, illuminating the entire cave with a bright, shimmering blue that has inspired artists, writers, and travelers for centuries. It’s a short experience, but one that leaves a lasting impression.

This attraction is perfect for cruisers who want a unique, iconic Capri moment that fits easily into a half‑day itinerary. Whether you pair it with a boat tour around the island or a visit to Anacapri, the Blue Grotto adds a magical highlight to your time in port.

Fun Facts

• The glowing blue effect comes from sunlight entering through an underwater cavity.
• Ancient Romans used the grotto as a private swimming spot.
• The cave entrance is only about a meter high, requiring boats to duck inside.
• The grotto is 60 meters long and 25 meters wide.
• It was rediscovered in the 1800s by German poet August Kopisch.
• The water appears brightest on calm, sunny mornings.
• Only small rowboats are allowed inside to protect the cave.
• The cave’s color changes subtly depending on the angle of the sun.

What to Expect During Your Visit

A visit to the Blue Grotto begins with a small rowboat that carries just a few passengers at a time. Your boatman will time the entrance with the waves, asking everyone to lie back as the boat slips through the low opening. Once inside, the cave opens into a glowing chamber filled with bright blue water that looks illuminated from below. The visit inside the grotto is brief—usually just a few minutes—but the visual impact is unforgettable. Expect a bit of waiting time during busy hours, especially when seas are calm and the grotto is open.

Why It’s Worth Visiting

The Blue Grotto is one of those rare attractions that truly lives up to its reputation. Travelers who love natural wonders, photography, or unique experiences will find it unforgettable. It’s also a perfect “bucket list” moment to add to a cruise day, especially if you’re short on time but want something iconic. Even though the visit is quick, the memory lasts long after you leave Capri.

Where It’s Located

The Blue Grotto sits along Capri’s northwest coastline, near Anacapri. It’s tucked into a rocky cliffside overlooking the open sea.

How to Get There From the Cruise Port

From Marina Grande, you can reach the Blue Grotto by:

• Boat tour: The easiest and most scenic option, departing directly from the marina.
• Taxi to Anacapri: Then transfer to a small boat or walk down to the grotto entrance. Travel time is typically 20–30 minutes depending on your route.

Best Time to Visit

Morning is ideal, when the sun hits the underwater opening at the perfect angle and seas are calmest. The grotto closes during rough water or high tide, so flexibility helps.

Tips for Visiting

• Bring cash for boat fees and tips.
• Wear comfortable clothing you can easily move in when ducking into the cave.
• Expect a wait during peak season.
• Don’t plan your entire day around it—weather closures are common.
• Combine it with a full island boat tour for the best experience.
• Keep valuables secure; boats can get splashed.

Common Complaints

• The visit inside the cave is very short.
• Entrance fees are collected in multiple parts (boat + grotto).
• Long waits during busy hours.
• The grotto may close unexpectedly due to waves or tides.

Final Thoughts

The Blue Grotto is one of Capri’s most magical experiences and a must‑see if conditions allow. Its glowing blue water and dramatic entrance make it unlike anything else in the Mediterranean.

For more ideas to plan your day, explore my full guide to the top things to do in Capri.