The area of Casteldardo, significant since Roman times, was strategically positioned with respect to the Valbelluna, the Dolomites, and the communication routes with Treviso and the surrounding plain.
It became a crucial point in the defensive line of the Caminesi. A significant event dates back to 1196, when the bishop of Belluno, Gerardo de Taccoli, conducted a military campaign that led to the conquest of Castel d’Ardo di Trichiana and other Treviso castles such as Zumelle and Quero, countering Treviso’s control over the region.