Temple of the Feathered Serpent at Teotihuacan

The Temple of the Feathered Serpent, also known as the Pyramid of Quetzalcoatl or Temple of the Plumed Serpent, is an ancient Mesoamerican pyramid located in Teotihuacan, Mexico. Constructed between 150–250 CE as part of the Ciudadela complex, it is a monumental structure linked to cosmology, timekeeping, warfare, and ritual sacrifice. The pyramid's construction utilized the talud-tablero architectural style and featured elaborate carvings of feathered serpent (Quetzalcoatl) heads, potentially numbering 260, correlating with the 260-day ritual calendar.

Significant events in the Temple's history include the sealing and repeated re-entry of a man-made tunnel beneath it before its permanent closure around 250 CE, coinciding with the pyramid's construction. Around 350 CE, the western facade was covered by an adosada platform, while sculptures on other faces were damaged or removed, possibly due to political motives. The site was later sacked and burned in the mid-6th century CE, with further attacks on remaining sculptures and the emptying of three burial chambers. The temple was later visited by the Aztecs, who viewed Teotihuacan as the city of the gods and the creation site of the Fifth Sun.

The temple was a site of significant ritual activity. Dedicatory offerings and sacrifices, including approximately 200-260 humans (likely warriors from the central Mexican highlands), were conducted during its active period. The sunken plaza within the Ciudadela complex was periodically flooded to simulate the primordial sea, with the pyramid symbolizing the emerging sacred mountain. Serpent heads on the temple were used as markers to track the 260-day ritual calendar, with burials linked to this calendrical function. Modern archaeological excavations continue to reveal insights into the temple's history and function.