The Blue Cave is located on the eastern side of the island of Besevo, and although Croatian fishermen have known about this cave since ancient times, it was not until 1884 that its entrance was blown up with dynamite, and before this small opening in the side of the cave was opened, the only entrance to it was Diving under the rock wall. A unique natural gem, this cave is at its most beautiful between 11 am and 12 pm on a sunny day, when you can enjoy the view of the bright blue glow as the sun's rays enter through the water and reflect on the limestone floor of the cave.