Built in 1107 by Pisan craftsmen, the church of Santa Maria del Regno in Ardara stands out as one of the most remarkable and well-preserved examples of medieval architecture in Sardinia. Its structure, built with perfectly squared ashlars of black basalt, enchants with the beauty of its Romanesque-Pisan forms. Situated near the ruins of the Judicial Palace of Ardara, once the seat of the sovereigns of Torres, the church served as the 'palatine chapel' for the Judges of Torres, hosting ceremonies and coronations. The façade, divided into five sections, features a raised-arch portal and a mullioned window. The interior, with three naves with cylindrical pillars, was enriched in the 17th century with panels depicting saints and apostles. The high altar is dominated by a magnificent retable from 1515 by Giovanni Muru, consisting of thirty-one painted panels separated by precious gilded wooden carvings.