On the edge of Mexico City's famed Zócalo plaza, next to the ruins of the Aztec sacred pyramid known as the Templo Mayor, the remains of an animal—perhaps a dog or a wolf—were discovered.

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.

Sugiyama's team discovered four dedicatory chambers beneath the Moon Pyramid, including one known ... comparable only to those conducted by the Aztec Empire over 1,000 years later.

Sacrifices were government-sanctioned ritual performances staged at the heart of the Moon Pyramid. Teotihuacán ... than 1,000 years before the eminent Aztec civilization settled in.

During my time in Mexico City, I learned what it’s like during an ancient Aztec energy meditation. I unexpectedly participated in one in a cave behind the Teotihuacán Pyramid of the Moon.