The ancient Roman Aquae Neapolitanae baths lie in the valley at the foot of the Monreale castle, about 2 km west of Sardara, where the Santa Maria de is Acquas sanctuary can be found.
They date back to the II-I centuries B.C. and was mentioned by Ptolemy in the Antonine Itinerary, with information on locations, stations and relative distances on the roads of the Roman Empire.
The Roman baths are still visible even if now incorporated into the buildings of the first modern baths built at the end of the 1800s; the project was drawn up by Gaetano Cima from Cagliari and implemented by Filippo Birocchi in neoclassic style. The modern complex envisaged the construction of a spa hotel, a wash house and mill powered by the springs.