Prepare to be mesmerized by the otherworldly glow of the Blue Caves, a true natural wonder on the island's northern tip. You can only reach this spot by sea, and the boat trip itself is part of the magic. As your skipper navigates into the limestone arches, you'll see the water illuminate in unbelievable shades of electric blue, a trick of the sunlight on the white seabed. Have your swimsuit ready, as plunging into these glowing waters for a swim is an unforgettable experience you won't want to miss.