Source:WTL photo in the Plaza de las Tres Culturas, Mexico, D.F.
Image and Comments: In this view we are looking over the tlatelolca ruins from an area adjoining the Church of Santiago (at our back). On this site, before the Spanish arrived, there stood a pyramid called the Calendar Temple. The circular platform was part of the temple of Ehécatl-Quetzalcóatl in his dual aspect.