The castle dates from the 11th century. On 5 September 1140, it was donated by Gottifredo di Arnolfo and Arnolfino di Cristofano, heirs of the founders, to the Monks of the Saint Michael Abbey in Poggio Marturi. The monks entrusted it to the Knights of the Temple, becoming one of the numerous "Mansiones" or "Domus Templi" on the Via Francigena. In 1312, as the Order of the Templars was abolished by Pope Clement V, the Magione was given to the Knights Hospitaller. The castle maintains signs of its Romanesque origins, in spite of some changes made during the ensuing centuries.