Castro was an ancient city, believed to have been originally founded by the Latins, on the west side of Lake Bolsena in present-day Italy. It was subject of the Wars of Castro fought between Popes Urban VIII and Innocent X, and the Farnese Dukes of Parma — first Odoardo Farnese and then his son Ranuccio II. The wars ended badly for the city; on the orders of Pope Innocent X, the city was razed on September 2, 1649, and never rebuilt.