Basilica of San Saturnino is a paleo – Christian Church in Cagliari, Sardinia. For the first time this Church was mentioned in the beginning of the 6th century. Most likely, it was built near the burial place of the Saint Saturninus of Cagliari, which, according to one medieval document, was martyred in 304, the year.

In 1089, the year the local ruler, Giudice Constantine II, gave the entire religious complex, including the monastery of Benedictine monks from the Abbey of Saint Victor in Marseilles. On this occasion the Church was restored in the Romanesque-Provencal style and in a 1119-year re-consecrated.

In 1324, the year during the siege of the quarter of Castello Aragonese troops Basilica was seriously injured and several decades later by the will of king Peter IV of Aragon she was given to chivalrous order of San Jorge de Alfama. In later centuries, the complex began to decline. In 1614, the year the entire area was dug in search of the relics of the first Christian martyrs in Cagliari, which are then placed in the crypt of the Cathedral. Interestingly, in 1669, the year some building materials from the Basilica of San Saturnino were used for the reconstruction of the Cathedral in the Baroque style. In 1714, the year the Basilica of the newly consecrated in honor of saints Cosmas and Damian. Recent consecration of the Church took place in 2004, after a long restoration, which lasted from 1978 to 1996 years.

The Basilica of San Saturnino is the walled area next to the early Christian necropolis, which are still ongoing archaeological excavations. From the original building, which was built in the shape of a Greek cross with a transept and a hemispherical dome, preserved only part of. The present Church consists of a covered dome area, dated to the 5th and 6th centuries, and the East wing with a nave and two side aisles, which ends in a semicircular apse. The Western facade of the Church, partially destroyed, is divided into three sectors. Lateral sectors have portals with trim, topped with a round lunettes. The main entrance to the Church is on the site of the former West wing – it is remarkable decorative splashes made during the restorations of the 20th century. The East wing is decorated with Lombard blind arches, and an apse, unfortunately, lost its original facing of limestone.