Chankillo — The Oldest Sun Observatory in the Americas

Aerial view of the fortified temple at Chankillo. Photograph Servicio Aerofotográfico Nacional Lima via Portal to the Heritage of Astronomy UNESCO & World Heritage Center

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…