The Aztec Temple Buried in the Heart of Mexico City

A few steps past the cathedral on Mexico City's main square, the city suddenly opens up: a pit of stone stairways, broken walls and carved serpent heads. This is the Templo Mayor, the Great Temple of the Aztec capital. For centuries it lay under the city. It was not exactly lost. Pieces of it kept turning up, and the city kept moving on, until 1978. By tradition, the Mexica founded Tenochtitlan on an island in Lake Texcoco in 1325. At its centre stood a pyramid with two shrines, one for Tláloc, god of rain, and one for Huitzilopochtli, god of war and the sun. It was built and rebuilt in seven stages, each new temple wrapped around the old one. After the city surrendered on 13 August 1521, the temples were pulled down over many years and a new capital rose on the ruins. The Metropolitan Cathedral, begun in 1573, stands on the sacred precinct, steps from where the temple stood. In 1790, workers digging drains in the square found the statue of Coatlicue and the Sun Stone; within months the goddess was buried again. Around 1900 a new sewer cut straight through the temple, while people believed it lay under the cathedral. In 1913-14 Manuel Gamio uncovered a corner and part of its staircase. Then, before dawn on 21 February 1978, electric-company workers hit the Coyolxauhqui stone: more than three metres across, about eight tonnes. Archaeologists and the authorities then decided to demolish the buildings above the temple, in a rescue project covering seven city blocks. The museum opened on 12 October 1987. The dig has since brought up the Tlaltecuhtli slab (2006), the Huei Tzompantli skull rack behind the cathedral (2015) and, in February 2026, three stone chests that showed six offerings were laid in one colossal ceremony. Traces of only about 45 of the 78 buildings of the sacred precinct have been found. The archaeology confirms human sacrifice, and the specialists also say Spanish sources exaggerated the numbers. In this episode: Why the Mexica built their temple in layers 1521: the temple pulled down, a new city built on top 1790: the goddess found in the square and buried again Around 1900: the sewer that cut through the temple 1978 to today: the discovery, the demolition, the dig Chapters: 0:00 A temple under Mexico City 1:52 Tenochtitlan, a city on a lake 3:33 The Great Temple 5:55 1521: the fall of the city 8:09 1790: the stone goddess 11:02 The sewer that cut the temple 13:49 21 February 1978 16:17 Tearing down to dig 18:03 Beneath the cathedral 18:44 Seven temples in one 19:42 New finds: 2006 and 2015 21:53 The dig goes on 24:58 What I think Based on sources: INAH, Zona Arqueológica Templo Mayor: https://lugares.inah.gob.mx/en/node/4463 INAH, Boletín 84 (2023), the Coyolxauhqui discovery: https://inah.gob.mx/images/boletines/... INAH, Boletín 413 (2023), the 1978-80 demolition: https://inah.gob.mx/images/boletines/... INAH, Boletín 640 (2024), the Templo Mayor Project: https://inah.gob.mx/boletines/la-hist... INAH, Boletín 84 (2026), the offerings: https://inah.gob.mx/images/boletines/... INAH, Boletín 383 (2025), Huei Tzompantli: https://inah.gob.mx/images/boletines/... Arqueología Mexicana, "El monolito de Coyolxauhqui": https://arqueologiamexicana.mx/mexico... Mexicolore, "Mexica Human Sacrifice: New Perspectives": https://www.mexicolore.co.uk/aztecs/h... Octavio Paz, "The Power of Ancient Mexican Art," NYRB: https://www.nybooks.com/articles/1990... Harvard Gazette, Eduardo Matos Moctezuma: https://news.harvard.edu/gazette/stor... More sources are in the pinned comment. AI disclosure: scenes of Tenochtitlan, the square in 1790, the 1900 sewer trench and the 1978 discovery and demolition are AI-generated reconstructions (about 6% of the film). What the City Forgot: the history the guidebooks leave out. #TemploMayor #MexicoCity #Tenochtitlan #AztecHistory