Parts of Stonehenge are over 5,000 years old - that's older than the Great Pyramid of Giza and much older than the Parthenon!
Ditches in the area have been dated back to 3100 BC. Postholes dating back to 8000 BC have been found nearby!
It is not entirely clear what the purpose of Stonehenge was, although many human and animal bones have been excavated.
The larger standing stones reached 4.1 metres (13 ft) high, helping instill a sense of awe and majesty.
The stones at Stonehenge could be from modern Pembrokeshire in Wales (150 miles away) or a quarry much nearer (25 miles distance).
Stonehenge is owned by the Crown of the United Kingdom. It became a World Heritage Site in 1986.
One very famous Victorian, Charles Darwin, visited Stonehenge in 1877 as part of his research on a book about earthworms!
Some of the standing stones can weigh around 25 tons! It took a lot of human effort to build the monument.
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