page_title: Aztecs
section_title: Mexico-Tenochtitlan
hierarchical_section_title: Aztecs / Urbanism / Mexico-Tenochtitlan
caption_attribution_description: Vestigios de Tenochtitlan
context_page_description: The Aztecs were a Mesoamerican culture that flourished in central Mexico in the post-classic period from 1300 to 1521. The Aztec peoples included different ethnic groups of central Mexico, particularly those groups who spoke the Nahuatl language and who dominated large parts of Mesoamerica from the 14th to the 16th centuries. Aztec culture was organized into city-states, some of which joined to form alliances, political confederations, or empires. The Aztec Empire was a confederation of three city-states established in 1427: Tenochtitlan, city-state of the Mexica or Tenochca; Texcoco; and Tlacopan, previously part of the Tepanec empire, whose dominant power was Azcapotzalco. Although the term Aztecs is often narrowly restricted to the Mexica of Tenochtitlan, it is also broadly used to refer to Nahua polities or peoples of central Mexico in the prehispanic era, as well as the Spanish colonial era. The definitions of Aztec and Aztecs have long been the topic of scholarly discussion ever since German scientist Alexander von Humboldt established its common usage in the early nineteenth century.
context_section_description: The capital city of the Aztec empire was Tenochtitlan, now the site of modern-day Mexico City. Built on a series of islets in Lake Texcoco, the city plan was based on a symmetrical layout that was divided into four city sections called campan (directions). Tenochtitlan was built according to a fixed plan and centered on the ritual precinct, where the Great Pyramid of Tenochtitlan rose 50 m (164.04 ft) above the city. Houses were made of wood and loam, roofs were made of reed, although pyramids, temples and palaces were generally made of stone. The city was interlaced with canals, which were useful for transportation. Anthropologist Eduardo Noguera estimated the population at 200,000 based on the house count and merging the population of Tlatelolco (once an independent city, but later became a suburb of Tenochtitlan). If one includes the surrounding islets and shores surrounding Lake Texcoco, estimates range from 300,000 to 700,000 inhabitants. Michael E. Smith gives a somewhat smaller figure of 212,500 inhabitants of Tenochtitlan based on an area of 1,350 hectares (3,300 acres) and a population density of 157 inhabitants per hectare. The second largest city in the valley of Mexico in the Aztec period was Texcoco with some 25,000 inhabitants dispersed over 450 hectares (1,100 acres).
  The center of Tenochtitlan was the sacred precinct, a walled-off square area which housed the Great Temple, temples for other deities, the ballcourt, the calmecac (a school for nobles), a skull rack tzompantli, displaying the skulls of sacrificial victims, houses of the warrior orders and a merchants palace. Around the sacred precinct were the royal palaces built by the tlatoanis.
caption: Mexico-Tenochtitlan urban standard, Templo Mayor Museum
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