This castle rises on a headland which is the highest point of the Livornese coastline, with 91 meters above sea level. On the north side of the cape lies the beautiful “Cala del Leone” (Lion's Cove). The small port of the castle is hidden on the southern side.The Sonnino Castle was built at the end of the 19th century around another Medicean watchtower, called “Torre San Salvatore” (Saint Saviour Tower). It is named after its first owner, the Baron Sidney Sonnino, Minister of the Kingdom of Italy a the time. He loved so much the seclusion of this place that he asked to be buried in a grotto beneath the castle.The stretch of raw coastline on the left is called “Sassoscritto” (Written Stone) because the rock is literally carved by the erosion.