The mysterious stone monoliths set in four circles, known as Stonehenge, were built in several different stages separated by hundreds or even thousands of years.
A circular outer bank, a ditch, and 56 pits were apparently dug about 3100 to 2300 B.C. in the late Stone Age or early Bronze Age.
The main monoliths were put up later in the late Bronze or Iron Age, about 2100 to 2000 B.C.
And bluish monoliths and smaller blue stones were brought in from the north flank of the Preselly Mountains in Wales about 2000 to 1500 B.C. and 1500 to 1100 B.C.
Despite now popular misconception, Stonehenge was not built by the Druids, but by a flourishing community that had extensive trading contacts throughout Britain and Europe.
Sometime between 55 B.C. and A.D. 410, the site was desecrated by the Romans, who tore down some of the upright stones.
Gravity, weather, or vandals brought down a total of five of the uprights and lintels in 1797 and 1900.
In 1958, those five fallen stones were raised to their original positions, but those knocked down by Roman hands were left where they were.