 The town is known for the Grottoes of San Giovanni, located some from the town.The area of Domusnovas was inhabited since prehistoric times, as attested by the presence of Neolithic walls (demolished in the 19th century) and several nuraghe.During the Roman domination of the island it was a village across the Cagliari-Sulcis road, used to trade the ore extracted in the nearby Metalla.