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Ancient astronomical sites are spread across the earth, and have been fascinating people for millennia. What is less known is that the Americas also have one. It is called the Chankillo Archaeoastronomical Complex and dates from between 500-200 BC. Located in the north-central coast of Peru in the Casma Valley, it comprises a set of constructions and natural features that together functioned as a calendar, using the Sun to define important dates through the year.
Image: The thirteen towers as seen from the fortified temple. Photograph Iván Ghezzi Copyright IDARQ via Portal to the Heritage of Astronomy UNESCO and World Heritage Center
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