Nuraghe Diana, located on the coast road to Villasimius, is an ancient nuragic complex that was part of the coastal defense system. Built in the 14th century B.C., it is strategically located on the hill of Is Mortorius, north of the promontory, and has a panoramic view of the Gulf of Angels. Throughout its history, it was used as a military post and underwent modifications, such as the addition of a watchtower during World War II. The structure of the nuraghe consists of a Central Tholos, two minor towers, a stairwell and a hallway, all connected by massive walls that form a triangular plan around a quadrangular courtyard. Inside are important architectural details, such as symmetrical niches and a small triangular window. Made entirely of granite, the nuraghe has large walls. Nearby, the remains of a village and some huts were discovered. Nuraghe Diana is an important archaeological site of the Nuragic culture of South Sardinia.