The island of Capri, having no natural port, was once accessible only from a small beach – probably one
of the reasons the emperor Tiberius preferred it – but necessity required the building of a port. In a bay on the north coast of the island, Marina di Capri lies inside the port, delimited by an inner breakwater. It offers a range of facilities and services to visiting yachts, including a convivial yacht club. Capri has many natural attractions, including the Blue Grotto, which is the result of sunlight passing through an underwater cavity and shining through the seawater to create a blue reflection that illuminates the cavern.