sentences:  Giannutri was mentioned by Pliny the Elder in his Naturalis Historiae and by the Latin geographer Pomporio Mela in his Dechorographia.The island was inhabited by Romans of which are the vestiges of a magnificent Roman villa, remained locked for almost 15 years and reopened on July 2, 2015.Giannutri was abandoned for mysterious reasons from the 3rd century until 805 when Charlemagne donated to the Tre Fontane Abbey some lands, including the island which returned to be inhabited by cenobitic monks and some hermits.