4. Stonehenge
One of the most baffling mysteries is that of Stonehenge located in England. The Stones are arranged in a peculiar fashion, most likely by the human hand. It is estimated that these structures of stone were built sometime between 3000 to 2000 B.C.E.
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It is widely believed by experts to be some sort of ancient burial ground. Some dispute these claims and believe it was the site of healing rituals.
The construction is a mystery too. It is unknown how ancient builders were able to lift these heavy stones into place. Stonehenge has been left untouched for centuries, and it remains shrouded in mystery.
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