Located on the Croatian Island of Bisevo, the Blue Cave is one f the most spectacular caves in the world.
Croatian fishermen have known about the existence of the Blue Cave for a long time, but it has been revealed to the rest of the world in 1884, when a small entrance was blown-up in the side of one of its walls.Before this happened, the only way to access the cave was to dive underneath its wall.
The best time to visit the Blue Cave of Bisevo is on a sunny day, between 11 am and 12 pm, when the sun rays penetrate the water and reflect off the limestone bottom of the cave, filling it with an incredibly beautiful blue light. It’s a truly unique experience that makes visiting the Blue Cave totally worth it.
via Atlas Obscura