These impressive stones are actually part of a cluster of several different archaeological sites in this area. Probably positioned in several stages between 3000 BC and 1500 BC, the grouping consists of an avenue of 19 monoliths extending northward from a circle of 13 stones, with other rows leading south, east, and west. Ruins of a cairn sit within the circle on the east side. Researchers believe they may have been used for astronomical observations, but you can create your own explanations. The visitor center has an exhibit on the stones, a gift shop, and a tearoom.
On unmarked road off A858, Callanish, Western Isles, HS2 9DY, Scotland