Answer:
When the Spanish conquistador Hernán Cortés and his men arrived in the Aztec capital of Tenochtitlán in 1521, they described witnessing a grisly ceremony. Aztec priests, using razor-sharp obsidian blades, sliced open the chests of sacrificial victims and offered their still-beating hearts to the gods. They then tossed the victims’ lifeless bodies down the steps of the towering Templo Mayor.
Andrés de Tapia, a conquistador, described two rounded towers flanking the Templo Mayor made entirely of human skulls, and between them, a towering wooden rack displaying thousands more skulls with bored holes on either side to allow the skulls to slide onto the wooden poles.
