The Great Pyramid of Cholula, also known as Tlachihualtepetl, is a complex located in Cholula, Puebla, Mexico. It is the largest archaeological site of a pyramid (temple) in the world, as well as the largest pyramid by volume known to exist in the world today. The adobe brick pyramid stands 25 metres (82 ft) above the surrounding plain, which is significantly shorter than the Great Pyramid of Giza's height of 146.6 metres (481 ft), but much wider, measuring 300 by 315 metres in its final form, compared to the Great Pyramid's base dimensions of 230.3 by 230.3 metres. The pyramid is a temple that traditionally has been viewed as having been dedicated to the god Quetzalcoatl. The architectural style of the building was linked closely to that of Teotihuacan in the Valley of Mexico, although influence from the Gulf Coast is evident as well, especially from El Tajín.

Cholula, is a city and district located in the metropolitan area of Puebla, Mexico. Cholula is best known for its Great Pyramid, with the Iglesia de Nuestra Señora de los Remedios sanctuary on top, as well as its numerous churches.