The greatest civilization of the Sardinian prehistory, that "nuragica", developed from the age of the bronze up to the beginning of the age of the iron, including that long period of time that goes approximately from the 1600 a.C. to the definitive conquest of Sardinia by the Romans (III a.C.).

The name of  "nuragica" civilization has origin by its typical megalithics constructions, the "nuraghi", shed anywhere in the island, but in great quantity in the  center - western areas. 

They have circular plant, with truncate - conic towers, built upward with blocks of stone not always quadrated and of decreasing dimensions, that are held up without need of mortar, thanks to the strength of gravity practiced by the them same weight. 

The construction and the architecture of the "nuraghi" has suffered during the centuries unusual transformations. 

After around a thousand of years, thanks to the consolidation of the same "nuragica" society, the constructions suffer some changes: they go out in the open, always in elevated position, they become stately, they are strengthened and they pick up around the villages. 

The gravestones in the "nuragica" age are represented by unusual megalithics burials called by the popular tradition "The Giants' Graves" that for dimension and form they express that character of grandeur proper to the whole "nuragica" architecture.