Castello di Baratuli, Castle on Mount Oladiri, Monastir, Italy.

Castello di Baratuli, also called di Monte Oladiri, is a ruined castle on Mount Oladri in the territory of Monastir. Recent excavations and restorations have brought to light part of its layout, which has a hexagonal plan. It stands on a site first occupied in the Nuragic period.

Castello di Baratuli was built around the mid-12th century on Monte Oladri by the judges of Cagliari to defend the surrounding territory, on a site already occupied in the Nuragic period. It passed to the Arborensi and then to the della Gherardesca before Pisan forces destroyed it around 1308. On 23 July 1455 Desiderata, wife of the Cagliari notary Monserrati Ferrer, sold the castle and its lands to Pietro Bellit for 200 lire; it stayed with his descendants and later passed to the Marchese di Villacidro.

The fortification displays building elements from multiple eras, spanning from Nuragic times through the medieval period. Visitors can observe these different layers directly in the structure's design and layout.

A daytime visit works best since the site is outdoors with paths ascending the hillside. Wear sturdy shoes and be prepared for uneven ground throughout the ruins.

Excavations beneath the medieval fortification uncovered remains of an earlier Nuragic settlement underneath. This discovery reveals the location was inhabited for thousands of years before the castle was built.