12月13日

Born Felice Peretti in 1520, he rose through the ranks of the Franciscan order and the Roman Curia. As Pope, he implemented financial and administrative reforms that stabilized the Papal States’ economy. He commissioned major urban renewal projects in Rome, including the restoration of aqueducts and the erection of obelisks. Under his leadership, the Vatican Library’s holdings were reorganized and expanded. His strict governance style strengthened papal authority but also sparked controversy. Sixtus V died in 1590, leaving a lasting legacy on the city of Rome and the Catholic Church.