Teotihuacan - The Pyramids of the Sun and Moon

Teotihuacan, consisting of the pyramid of the sun, the pyramid of the moon, the avenue of the dead and associated religious and ritual structures demonstrates the importance of the location of Mexico City Basin to maintaining rule over the Mexican region.  The site was used by several ruling civilizations , including the Aztecs, and was built between 100bc and 250ad.  The pyramids were thought to have been sacred places with the remains of ritual sacrifice being found at the corners.  The scale of the site and structures was phenomenal, with a large proportion not yet recovered or restored.