Blue Cave (Modra špilja)

The Blue Cave (Modra špilja) is one of Croatia’s most mesmerizing natural wonders, located on the tiny island of Biševo, just off the coast of Vis Island. Famous for its ethereal blue glow, the cave is best visited between 11 am and noon, when sunlight passes through an underwater opening and reflects off the white sandy floor, bathing the interior in a magical blue and silver light. This daily spectacle draws visitors from around the world and is often compared to Italy’s Blue Grotto on Capri.

To reach the Blue Cave, visitors typically depart by boat from Komiža harbor on Vis Island, with organized excursions leaving in the morning to ensure arrival during the optimal light show. The journey itself is scenic, offering views of the Adriatic and the rugged coastline of Biševo. Entry into the cave is an adventure in itself—guests must lie flat in a small boat to pass through the narrow sea tunnel, so it’s not recommended for those with claustrophobia.

The cave’s history stretches back centuries, with local fishermen knowing of its existence long before Austrian explorer Baron Eugene von Ransonet-Villez brought it to wider attention in 1884. Today, the Blue Cave is a must-see for anyone visiting Vis, combining natural beauty, a touch of adventure, and a truly unforgettable atmosphere. Advance planning is recommended, as the cave is a popular attraction and weather conditions can affect access.