View of Stonehenge looking ENE:
Altar Stone (center), Sarsen Trilithons and Bluestones

Looking SE:  Altar Stone visible in center,
tallest are Trilithons, smaller (with lintels) are circle
of Sarsen Stones,  smallest are Bluestones

Looking NW:  Sarsen Circle Stones, Bluestones and Sarsen Trilithons
Current configuration dates back approx. 3600 years