Born about 5 million years ago, the Island of Giglio, due to its geographical position had an adventurous and strife history. Already inhabited since the Stone Age, subsequently was chosen by the Etruscans as likely as a military outpost. The island lived one of the moments of greatest splendour under the Roman dominion of the family of the Domizi Enobardi, owners of the monumental Villa Patrizia, located in the locality of Castellari, thus becoming a node fundamental maritime trade between the provinces, as demonstrated by the numerous wrecks in the waters in front of the Island of Giglio. In 805 Carlo Magno donated the island to the Abbey of the Three Fountains, but after various vicissitudes passed to the Aldobrandeschi, the Pannocchieschi, to Gaetani, to the Orsini and the Commune of Perugia. In 1241 in the waters Gigliesi, the fleet of Federico II destroyed the Genovese, that led to Rome the Prelates for the Council convoked by Pope Gregory IX against the emperor himself. Since 1264 the Island of Giglio was held by the Pisans, to whom we owe the urban structure of Giglio Castello. In the following centuries, underwent numerous dominations (including that of the Medici of Florence from the beginning of the XV century) and Saracen raids, one of the most disastrous by the Pirate Khair ad-Din said the Barbarossa, who in 1544 had razed to the ground the country and deported as slaves well 1000 of the 1200 inhabitants of the island. On 18 November 1799 marks the end of barbaric incursions as well as the heroic victory of Gigliesi against the "Turks".
The village of Giglio Castello is located in the central part, more high and internal, of the Island of Giglio. The village, of medieval origins is characterized by the imposing Rocca Aldobrandesca, an integral part of the castle complex together with the features and well preserved walls and some towers.
The Church of San Pietro, dating from the XV century, is the main church of the island, where it preserves a treasure of Pope Innocent XIII and you can admire a magnificent crucifix eburneo, by Giambologna. The church also preserves the relics of San Mamiliano, protector of the island of the Tuscan Archipelago. Perfectly preserved the walls that enclose the entire village. To access them you will pass through the door of the Rocca. The Aldobrandesca Fortress is located in a dominant position along the perimeter walls. There you can enjoy a magnificent view over the whole of the archipelago and the Maremma coast. On clear days, can be seen clearly also the island of Elba and Corsica.