Site · Mesoamerica · Mexico
Teotihuacan
From the Pyramid of the Sun, axis sunsets fall exactly 260 days apart, the length of the ritual calendar
c. 100 BCE-550 CE
Was the city's skewed grid a working calendar that farmers used, or a sacred statement that no one needed to read?
Photo: Hdlrosa, CC BY-SA 4.0, Wikimedia Commons