Cite this page as: Beth Harris, "Teōtīhuacān reached its peak from the 1st to the mid-6th century C.E. The main structures include the Pyramids of the Sun and the Moon, Avenue of the Dead, and the Temple of Quetzalcoatl (feathered serpent). Teotihuacan was home to as many as 125,000 people. The name Teōtīhuacān was given by the Aztecs long after the city had been abandoned c. 550 C.E. The original name is lost.," in Smarthistory, August 19, 2016, accessed May 23, 2018, https://smarthistory.org/pre-columbian-mesoamerica/22808430370_eeba148288_k/.