On the edge of Mexico City's famed Zócalo plaza, next to the ruins of the Aztec sacred pyramid ... of Quetzalcoatl," a head-to-toe costuming topped off with "a serpent mask inlaid with turquoise." ...

The double-headed serpent is one of the most highly crafted and strangely compelling of these rare Aztec survivals ... snarling, head. The body of the snake's entirely in turquoise, but when ...

The double-headed serpent is one of the most highly crafted and strangely compelling of these rare Aztec survivals ... snarling, head. The body of the snake's entirely in turquoise, but when ...

The double-headed serpent is one of the most highly crafted and strangely compelling of these rare Aztec survivals ... snarling, head. The body of the snake's entirely in turquoise, but when ...

When the pyramid was first built, it stood 75 feet tall, making it taller than ancient Egypt's Sphinx of Giza. It is part of the Temple of the Feathered Serpent ... rise of the Aztec Empire.

A chain of massive earthquakes may have led to the decline and eventual desertion of the pre-Aztec Mesoamerican ... the Temple of the Feathered Serpent, the Pyramid of the Sun and the Pyramid ...