Piazza Mercanti is a focal city square of Milan, Italy. It is situated between Piazza del Duomo, which denotes the focal point of the cutting edge city of Milan, and Piazza Cordusio, and it used to be the core of the city in the Middle Ages. At the time, the square was bigger than it is currently and known as "Piazza del Broletto", after the "Broletto Nuovo", the royal residence that possessed the focal point of the square now on the north side. In the thirteenth century, there was six passage focuses to the square, each related to a particular exchange, from sword smithies to cap makers. A number of statues and different landmarks are found in Piazza Mercanti.
Palazzo della Ragione has two eminent reliefs, one of a hog that is allegedly of Roman source and related to the legend of the scrofa semilanuta and one speaking to Oldrado da Tresseno, who requested the development of the castle itself. Stone worker Giovan Pietro Lasagna has acknowledged two statues of the square, that committed to Ausonius situated on Porta Orefici, i.e., the "Gem specialists' Portal", one of the passage focuses to the square and that devoted to Augustine of Hippo on the veneer of the Scuole Palatine. Another outstanding statue devoted to Ambrose, by stone carver Luigi Scorzini, is found on the veneer of the Palazzo dei Giureconsulti.