For the Aztecs, religion was as much a part of daily life as eating or breathing.
The city of Tenochtitlan was filled with huge open-air temples. The largest, the Great Temple, was in the center of the city. The priests at the temple were central to Tenochtitlan’s religious life. The Aztecs believed they lived in the era of the fifth Sun and that the world would end violently one day. To delay that day, they performed human sacrifices.