Great Pyramid of Cholula is a monumental construction in Mexico, North America. Mexican National Institute of Anthropology and History (INAH) gives its chronology as “c. 300 BCE to 800 CE.” Its listed material is Mud brick. Its height is listed as 66 m (estimated). Mexican National Institute of Anthropology and History (INAH) also records: “Temple platform.”
The largest pyramid in the world by volume, now crowned by a colonial church.
What makes it extraordinary
Six Superimposed Architectural Layers
The pyramid was not built in a single event but consists of six superimposed structures, each representing a different period of ethnic dominance. Construction began in the 3rd century BC and continued through the 9th century AD, gradually building up the bulk of the 'hand-made mountain.' The earliest phase, known as La Conejera, dates to approximately 200 BC and features a simple adobe core. Later expansions, such as the Pyramid of the Painted Skulls and the Pyramid of the Nine Stories, eventually buried these older structures within their massive adobe cores.
Adobe Brick and Talud-Tablero Engineering
The foundation and core of the pyramid were primarily constructed using sun-dried adobe bricks. These bricks were reinforced with ceramic fragments, obsidian, and gravel to improve compaction and structural integrity. Architecturally, the site is noted for its use of the talud-tablero style, which features sloping walls (taluds) topped by rectangular panels (tableros). This style links Cholula closely to the great metropolis of Teotihuacan, though the site also exhibits Gulf Coast influences, particularly from El Tajín, seen in its specific molding designs and decorative stone mosaics.
Eight-Kilometer Underground Labyrinth
Because the colonial church atop the pyramid is a protected monument, archaeologists could not fully excavate the structure from the surface. Instead, they explored the interior by digging an extensive network of tunnels, which reached a total length of approximately 8.0 kilometers (5 miles) by 1954. These tunnels, initiated by architect Ignacio Marquina in 1931, utilized mining techniques including miniature coal cars to remove debris. Today, 800 meters of these well-lit passages are open to the public, allowing visitors to view internal staircases and buried substructures without disturbing the surface.
World's Largest Pyramid by Volume
The Great Pyramid of Cholula, also known as Tlachihualtepetl, is recognized by the Guinness Book of Records as the largest pyramid and monument ever constructed globally. Its total estimated volume exceeds 4.45 million cubic meters, significantly surpassing the 2.5 million cubic meters of the Great Pyramid of Giza. While Giza is taller at 146.6 meters, Cholula's final form measures a massive 300 by 315 meters at its base, covering 94,500 square meters, which is nearly double the footprint of Pharaoh Khufu's famous Egyptian monument.
Modern Preservation and Tourism Impact
The Great Pyramid is a major tourist attraction, receiving nearly 500,000 visitors in 2017. However, its preservation faces significant challenges. The site is vulnerable to vibrations; consequently, the city and the Catholic Church have banned certain large fireworks that could damage the internal tunnels. Additionally, while the archaeological heritage site is estimated at 154 hectares, only six hectares are currently managed as a public zone, with 90 hectares remaining in private hands. To protect the structure from urban encroachment, authorities have purchased surrounding land to create buffers, such as soccer fields and flower plantations.
The Mural of the Drinkers
Discovered accidentally in 1969 at a depth of 7.6 meters, the Mural of the Drinkers is one of Mexico's longest pre-Columbian murals, stretching 57 meters. It depicts a ritual feast where 110 figures, many wearing zoomorphic masks and turbans, are shown drinking what is believed to be pulque. The scene is remarkably detailed, showing participants in various states of relaxation, including activities like serving, drinking, and even vomiting. The mural is divided into six sections, likely the work of different artists, and represents the oldest known depiction of the ritual of the pulque gods.
The Ritual Courtyard of the Altars
Adjoining the south side of the pyramid is the Courtyard of the Altars, a large open area measuring 70 by 54 meters. This complex served as the main access to the pyramid and was likely used for spectacular public ceremonies and rites associated with the transfer of power. It is named for several unique altars found within, including Altar 1, a 3.85-meter vertical stone, and Altar 2, a horizontal pedestal decorated with feathered serpents. The courtyard's surrounding platforms were built up over six construction phases, gradually encroaching on the central space and increasing the platform height.
The Altar of the Sculpted Skulls
Located in the northeast patio area, the Altar of the Sculpted Skulls is a Postclassic mausoleum containing the remains of a man and a woman. The altar is named for three human skulls made of clay and covered in stucco that ornament the structure. The male skeleton was found with rich grave goods, including ritual vessels, obsidian arrowheads, and a musical instrument, suggesting he was a renowned warrior. The female was accompanied by domestic items like bone needles and spindles. A jawbone of a xoloitzcuintle dog was also present, intended to guide the deceased through the underworld.
Colonial Church and Religious Continuity
In 1594, Spanish colonists constructed the Iglesia de Nuestra Señora de los Remedios directly atop the pyramid, which by then was overgrown and resembled a natural hill. This practice of building Catholic sites over indigenous temples was common to co-opt the existing religious significance of the location. The pyramid remains a major pilgrimage site today; the Virgin of the Remedies replaced the pre-Hispanic rain goddess Chiucnāuhquiyahuitl, but the traditional veneration date of September 8 was maintained. This religious continuity has preserved the site's sacred status while simultaneously preventing full archaeological excavation of the pyramid's exterior.
Evidence of Human Sacrifice and Burials
Excavations have uncovered over 400 human burials within the Great Pyramid complex, many dating to the Postclassic period after the temple's primary use had ceased. These findings include evidence of human sacrifice, such as decapitated victims and mangled body parts. Notably, the remains of eight individuals, including children deposited in ceramic pots, were found under the flooring of the Courtyard of Altars. These children are interpreted as messengers to the rain god Tlaloc, likely offered during a period of severe drought. Another 46 disarticulated individuals were discovered near a southwest plaza altar.