The origins of the town's name is uncertain: in fact some historians attest that it derives from the Latin "Juno Matrona," referring to the goddess Juno, while for others from "luna" (moon), the ancient name of the goddess Diana. Town in the province of the Medio Campidano, located between the plains of Marmilla, surrounded by the hills of Trexenta, the town's territories are crossed by the river Mannu and borders with Sanluri. The local economy is mainly based on animal breeding and production of cereals, olives, grapes, etc...
The presence of a settlement is attested since the Nuragic Ages, while the discovery of tombs and other relics dating back to the Imperial period evidence that the area was inhabited by the Romans. In medieval times it was part of the Giudicato of Arborea and in the first half of the XV century, it was assigned to the Marquis of Oristano, who received orders directly from the Spanish Royal Family. Later it was later incorporated into the County of Quirra. Fief assigned to the Carroz Family, later it was acquired by the Centelles and at the end of the XVIII century it became part of lands donated to the Osorio de la Cueva. Subsequently the town shared the same historical events of the rest of Sardinia and Italy.

Attractions:
- the Parish Church dedicated to St. John the Baptist, of which the exact date of construction is unknown, even though its existence is evidenced since the mid-XVI century. It submitted changes and renovations during the XVIII and XIX centuries. The simple façade, preceded by a staircase and broken only by an arched portal and a central window. On the two sides, the building features two asymmetrical Bell Towers. Inside is preserved the Retablo of Santa Maria, a XVI century artwork of Antiochus Mainas;
- the ancient Church of Santa Greca of which only a few ruins remain;
- the XVIII century House of Elena Serpi in Santa Cruz;
- the Tomb of the Giants in Su Cuaddu'e Nixìas;
- the Museum of the territory of Sa Corona Arrubia;
- the Nuraghe Trobas and Pitzu cummu;
- the Temple of St. Elias;
- Casa Melis;
- Casa Setzu.