The Blue Cave is a sea cave on Bisevo Island, a short way from the island of Vis in Croatia. It is one of the best-known natural sights in the Adriatic, and it is visited mainly for its light.
What to expect
Sunlight enters the cave through an opening below the water's surface. As it passes through the sea, it lights the interior with a soft, glowing blue. Inside, the water and the rock seem to hold the colour, so the cave feels less like a dark hollow and more like a lit chamber. The effect is strongest at midday, when the sun is high enough to reach the opening.
Because the entrance is low, most visitors reach the cave by small boat rather than on foot. Swimming inside is part of the experience: the clear water makes it feel as though you are floating in deep blue light.
Planning your visit
- Timing: go around midday, when the light is at its brightest.
- Getting there: travel is by small boat, usually arranged from Vis.
- Bring: swimwear and a towel, as swimming is the main way to enjoy the cave.
The Blue Cave suits anyone interested in the sea and its natural light, from keen swimmers to photographers. Vis itself is a quiet island, and a day trip to the cave can be paired with time on the island's shore and its towns.