Capodimonte is located on a promontory on Lake Bolsena as can be understood from its name.
The area has been popular since prehistoric times as shown by numerous stone artifacts from the Paleolithic and the large canoes made from tree trunks.
During the Etruscan period the city of Visentum stood on Mount Bisenzo, which today has become a natural archaeological park.
It was then conquered by the Romans and became a seat of the diocese in the Middle Ages. When the Lombards arrived the population took refuge at the end of the promontory, giving rise to the current village.
In 1385 it became a possession of the Farnese family who made it part of the Duchy of Castro created by Palo Pope III Farnese for his son Pier Luigi. In 1649, with the destruction of Castro by the pope, the Apostolic Camera regained possession.
The island of Bisentina, part of Capodimonte, followed an independent path. After the splendour of the Farnese it was gradually depopulated because of malaria caused by being near Lagaccione. Pope Pius VII in 1816 had the area reclaimed and joined the island to the territory of Capodimonte. Capodimonte followed the fate of the Papal States until the unification of Italy.