Was built in 1517. Door Ss. Quaranta is considerate as a "younger sister" of Door de San Tomaso and it is at the end of Borgo Cavour. The set had to give up the idea of fortress, a symbol of a strong and secure government. The lion above the central arch, by De Lotto, replace the one destroyed by the French in 1797. The three slits that cut the facade vertically, indicate the presence, in the past, of two drawbridges. Within you can notice a fifteenth century bas-relief representing San Liberale Patron armed with the shield and the drape of the city.