The construction of the monumental cross of Mount Amiata was decided at the end of the 1800s following the indications of Pope Leo XIII who, in order to celebrate the Holy Year of 1900, suggested that twenty crosses be erected on the tops of various mountains scattered throughout Italy that they celebrated the Redemption, one for each past century including the 20th which was now about to see the light.
Mount Amiata, located in southern Tuscany and 1738 meters high, was the ninth construction in order of time in 1910. The Tuscan episcopate, for the cross to be erected, entrusted the task to Monsignor Bellucci, bishop of Chiusi and Pienza, in whose jurisdiction Mount Amiata was located. The project was commissioned to the architect Zalaffi, from Siena, who completed the work in a short time. The cross was mounted in Siena and immediately appeared "slender, harmonious and beautiful", reflecting the Belle Époque style, with various elements of a flowery style. All in wrought iron, 22 meters high and resting on a base of 8x8 meters.