Su Nuraxi is the flagship nuraghe of Sardinia and the most impressive prehistoric monument on the island. The central tower, built around 1500 BC, originally rose to around 21 metres — today it stands at just under 15 after partial collapse, but is still imposing. Four smaller towers cluster around it, connected by a thick defensive wall that encloses a courtyard. Beyond the main complex spreads the remains of a substantial Bronze Age village of circular stone huts, some with their entrances and interior benches still intact.
The site is only accessible by guided tour, which run throughout the day from the entrance. Italian-language tours are always available; English tours run less frequently, so check when you arrive. The tour takes about 45 minutes and includes the interior of the main tower and several of the village huts. The site is open daily from 9am to an hour before sunset. Combined tickets with the nearby Casa Zapata ethnographic museum in Barumini offer the best value.