Tiberius' Grotto is a historical site located on the island of Capri, Italy. It is named after the Roman Emperor Tiberius, who ruled from 14 to 37 AD. The grotto served as a private retreat for Tiberius, featuring stunning views of the surrounding sea and landscape. The grotto is part of a larger complex of villas built by Tiberius on Capri. It includes various chambers and terraces, showcasing the emperor's luxurious lifestyle. Today, visitors can explore the grotto and appreciate its archaeological significance, as well as the natural beauty of the island.