In 1291, in the course of the war with Verona, the Republic of Venice occupied Valdagno and kept it until 1340. In 1377 it was pillaged by Bernabò Visconti and in 1404 it went back to the Venetians. From 1434 to 1439 it was occupied by the Visconti family and then re-annexed to Venice by Gian Giorgio Trissino.