Pyramid Under Mexico City.

Archaeologists discovered a 1,500-year-old pyramid under Mexico City:

The unnamed pyramid has the same sized base as the giant Pyramid of the Moon at the famous archeological site of Teotihuacan, an hour’s drive northeast of the capital, which is known as the "City of the Gods" and is Mexico’s biggest ancient city.

Archeologist Jesus Sanchez said on Wednesday the latest find was built by the same people who constructed Teotihuacan between A.D. 400 and 500, and has evidence that it was used for ceremonial purposes.

Link | Christian Science Monitor Article