Why did ancient Sardinians build a massive stone fortress that still baffles modern archaeologists?

Countries & Cities · Published 29 September 2026 Swipe more like this →

In short: Su Nuraxi in Sardinia is a prehistoric marvel, featuring a towering central structure surrounded by a sprawling village. While it stands as the most iconic example of the Nuragic civilization, experts remain divided on whether this site served as a military stronghold, a religious sanctuary, or a communal political hub.

Constructed in stages between the seventeenth and sixth centuries BCE, Su Nuraxi represents a sophisticated feat of ancient engineering. The core of the site is a central tower reaching 18.6 meters in height, built from massive basalt blocks. During the Late Bronze Age, this primary structure was fortified with four additional towers connected by a curtain wall, creating a complex defensive perimeter. By the Iron Age, the site had expanded further, enclosed by a seven-lobed wall that protected a village of varying density.

The village itself provides a window into the daily lives of its inhabitants, who lived in circular dwellings constructed from large boulders and topped with timber-framed, conical roofs. Archaeological evidence suggests these homes evolved over time, shifting from single-room units to more subdivided living spaces. Excavations directed by Giovanni Lilliu between 1950 and 1957 revealed that the settlement was a bustling center of activity, featuring specialized areas for cooking, manual labor, and agricultural processing. By the 9th to 8th century BCE, the community had even implemented a rudimentary sewerage system and paved public squares.

Despite its complexity, the true purpose of Su Nuraxi remains a subject of intense scholarly debate. While Lilliu championed the traditional view that the site functioned primarily as a fortress, other researchers propose that the central tower may have served as a refuge, a parliament for local leaders, or a religious site. The discovery of meeting huts containing symbols of local deities adds weight to the theory that the complex was a political or spiritual heart for the surrounding population. After being occupied by Carthage and later the Romans, the site was eventually abandoned, leaving behind a legacy of tools, weapons, and pottery that continues to define our understanding of the Nuragic people.

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