Oristano is a town and comune, capital of the Province of Oristano, on the island of Sardinia, Italy. It has approximately 32,500 inhabitants.
The Tower of St. Christophoros, otherwise known as Tower of Mariano II, was built in 1290, is 19 metres tall and the most striking remaining evidence of the old walls built at the time of the Giudicato, as it was one of the main gates thereof.St. Mary's Cathedral (1130) was rebuilt during the reign of Mariano II after being destroyed in a siege. Of the original structure of Mariano only parts of the apse and base of the campanile are left, as well as the Gothic Chapel of the Rimedio, which houses some medieval sculptures. Parts of a more ancient Byzantine edifice can be seen in the court. To the 17th century renovation belongs the Chapel of the Archivietto ("Chapel of the Small Archive"). The current Baroque style is largely from the 19th century restoration. It has been supposed that the Cathedral was used for the burials of the giudici and their families, but the subsequent dominations have deleted all traces of them. In the interior is a wooden statue of the Annunziata, attributed to Nino Pisano.The Church of Saint Dominic (San Domenico) was built in 1634 at the initiative of friar Pietro Flores and financially supported by local nobleman Baldassarre Dedoni. Citizens also made donations in exchange for 2 square meters of floor space for a tomb therewithin. The building is a rectangularly-shaped chamber with two chapels formed in its right side wall: one of them is dedicated to Saint Vincent and the other one to the name of Jesus. Most notably, it has a wood retable that served as the main altar and includes several niches dedicated to Saint Dominic and other Saints. Upon the suppression of religious orders in 1832 the Dominicans, who had been in charge until then, bequeathed the church to the archconfraternity of the Saint Name of Jesus. It was thereafter refurbished several times, deconsecrated and currently serves as an Auditorium for congresses and concerts.