Stonehenge is a prehistoric monument in Wiltshire, England, about 2 miles west of Amesbury and 8 miles north of Salisbury. One of the most famous sites in the world, Stonehenge is the remains of a ring of standing stones set within earthworks.
Silbury Hill, UK. Silbury Hill, near Avebury in Wiltshire, is the largest prehistoric man-made mound in Europe. It was created around 2660 BCE and stands 130 feet high, but its purpose is unknown. Despite centuries of study and excavation, it remains one of the most enigmatic of British prehistoric sites.