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

MEXICO CITY – It was an archaeological adventure: a 12-day family trip to Mayan and Aztec pyramid cities, from Mexico City to the Yucatan jungle. Our timeline spanned from the ancient city of ...

Visually it's not even a pyramid, but a below street-level ruin of seven multilayered pyramid foundations. Electricians working in a basement discovered it in 1978 when a floor collapsed, revealing a ...