The Palazzo dei Rettori, seat of the Venetian governors, is a beautiful example of the Venetian Renaissance with a portico, mullioned windows with two lights and loggias in the centre, now the seat of the Prefecture. It was the seat for almost four hundred years of the Venetian rectors who governed Belluno and its territory. On top of a pre-existing and more backward fortified building built starting from 1409 (and completely burnt down in 1802) was added in 1491 by the Venetian rector Maffeo Tiepolo on the west side a first Lombard loggia with two floors, resting on three arches.
In 1496 an enlargement project was adopted, designed by the Venetian Giovanni Candi (the author of the "bovolo" of Palazzo Contarini in Venice), which was interrupted several times until the crisis following the Cambray war. It was finally completed in 1536 during the rectorate of Girolamo Rimondi.
Between 1536 and 1547 the clock tower was erected, designed by Valerio da San Vittore from Fiesole. On the facade, coats of arms and busts of Venetian rectors of the XV-XVII centuries. Inside many rooms, despite the radical restorations made necessary several times following the earthquakes of the last two centuries, have retained their original appearance, in particular the central hall on the second floor and the nearby room, with the Sansovino ceiling.
