The fountain (seventeenth-eighteenth century) is one of the most characteristic of the city and is called by the people of Spoleto simply Il Mascherone, because of the imposing human mask crowned with laurel from whose mouth comes out the strong jet of water. An inscription tells of a restoration carried out in 1736 on the aedicule that frames the basin and the mask, which are instead seventeenth-century. On the right is another small fountain that bears the inscription BIBE VIATOR, an invitation to quench one’s thirst in its very fresh waters addressed to the traveller.