Buried beneath the streets and plazas of modern-day Mexico City are the ruins of ancient Aztec temples where human sacrifices were routinely …
How Did Ancient Aztecs Use the Haunting Aztec Death Whistle?
Some say the death whistle was used to terrify the Aztecs' enemies in battle. But what was its real use? Plus, the last Aztec emperor, secrets of Chichén Itzá and more.