It is one of the most admirable examples of Romanesque-Pisan architecture in Sardinia. It stands next to the remains of the ancient Camaldolese monastery founded by the same order around 1112. It has a Latin cross plan with a single-nave hall, concluded by three apses facing the transept, and flanked by the majestic square-bore bell tower. The abbey complex was later abandoned, probably at the end of the 14th century by the monastic order, in fact the last deed regarding the abbey as a monastery dates from 1384.