New discovery changes everything we know about one of the world's oldest and most visited landmarks

Stonehenge’s Altar Stone traces back to Scotland, sparking new theories about prehistoric trade. Explore other mysterious sites, from Europe to Ohio.
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Newgrange 5,200-Year-Old Tomb: Older Than Stonehenge and the Pyramids

Built around 3400 BCE, Newgrange in Ireland predates Stonehenge by 500 years and Egypt’s pyramids by 900. Containing 200,000 ...