The Blue Grotto, or Grotta Azzurra is one of the most beautiful sea caves in Italy. Sunlight, passing through an underwater cavity and shining through the seawater, creates a blue reflection that illuminates the cavern. The cave which extends some 50 metres into the cliff at the surface, and is about 150 metres deep is a popular tourist destination and a boat trip is a definite must while in Capri. During Roman times, the grotto was used as the personal swimming hole of Emperor Tiberius as well as a marine temple, and decorated with statues of the Roman sea gods Neptune and Triton.
