Oil platform construction facility in Arbatax harbour (Sardinia/Sardegna). They lay on the side from south to north. The upper part (above the water) lays on the south. Great structure, I saw it live last year!
During the late 2nd millennium B.C. in the Bronze Age, a special type of defensive structure known as Nuraghi (for which no parallel exists anywhere else in the world) developed on the island of Sardinia, Italy.