Was Stonehenge built by Druids or aliens? No, it was one of thousands of stone circles built in the Neolithic era by skilled teams. Yet Stonehenge has layers of intrigue that are missing elsewhere. Recent findings show 90 buried megaliths and many mounds and pits, now depicted in the new visitors' center. Nearby is the more complex, magnificent Neolithic site of Avebury. Silbury is adjacent, the largest man-made hill in Europe, plus gigantic West Kennet Long Barrow, all where those enigmatic “crop circles” appear. Come enter these sacred spaces and unlock some mysteries yourself.