Created at the end of the 13th century, the intersection of two main roads of the city. In the central area of the square is the Fountain of Bacchino, which was cast in bronze between 1659 and 1665 by Ferdinando Tacca, during the recognition status of city of Prato. In front of City Hall (located in the square) is also found in white Carrara marble statue dedicated to the merchant of Prato, Francesco Datini Antonio Garella (1896).