Indigenous people had been worshiping here for a thousand years, up until the 17th Century
Mysterious and enigmatic, this lost city is the most-visited archaeological site in Mexico.
In the ancient city of Tula, colossal statues stand guard. What are they?
Larger than the Great Pyramid of Giza, who built this massive structure 2,300 years ago?
Are there monuments on Mars? How do they relate to Ancient Mexico?