Archaeologists have discovered the ruins of an 800-year-old Aztec pyramid in the heart of Mexico City that could show the ancient city is at least a century older than previously thought.

read a paper on the Aztec Calendar, or Mexican calendar stone, from which an insight has been obtained to the extent of the astronomical knowledge of the Aztecs. View Full Article in Timesmachine ...

Aztec Codex, 1519 Throughout downtown Mexico City, archaeologists have found some 40,000 artifacts, including mirrors made of shiny obsidian, Pacific turtle shells that were much-prized by the ...

Still, the whole complex has been deemed a UNESCO World Heritage Site and is one of Mexico City's most popular ... including the famous Aztec Calendar Stone, known as Piedra del Sol, as well ...