Stonehenge

Perched on the chalk uplands of Salisbury Plain, the megaliths of Stonehenge offer one of the most recognizable outlines of any ancient structure. Its purpose—place of worship, sacrificial arena, giant calendar—is unknown, but its story is one of the most extraordinary of any of the world's prehistoric monuments. Constructed in several phases over a period of some 1500 years, beginning in 3000 BC, Stonehenge's key elements are its “bluestones,” transported from West Wales by unexplained means, a