At the heart of the town, sober and austere palaces surround this square; inset with twin bays, the Palazzo Pretorio stands alongside a massive crenellated tower, which earned its nickname of Torre del Porcellino (piglet tower) on account of the wild boar carved on its upper part. Opposite stands the Palazzo dei Priori; from the same era, it is decorated with the emblems of Florentine governors.