No trip to Anacapri is complete without a visit to the famous Blue Grotto. This natural sea cave is renowned for its vibrant blue waters, created by the sunlight passing through an underwater cavity. To enter the cave, you'll need to board a small rowboat and lie flat to pass through the narrow entrance. Once inside, you'll be amazed by the intense blue color of the water and the magical atmosphere. The Blue Grotto is a unique and unforgettable experience that should not be missed.