The Ponte della Pia (Bridge of Pia) is a bridge of Roman origin, rebuilt in the Middle Ages, located along the road leading from Siena to Massa Marittima, just after the village of Rosia, near Sovicille. The bridge consists of a single arch connecting the two banks of the river Rosia.
Like the Devil’s Bridge, the Ponte della Pia is linked to a legend. According to tradition, its name derives from the Sienese noblewoman Pia de’ Tolomei, mentioned by Dante Alighieri in the Divine Comedy and killed by her husband, who thrown her from a rock. Legend has it that the ghost of Pia de’ Tolomei dressed in white appears on the bridge during full moon nights without touching the ground.