Inca temples were sites of elaborate daily rituals, child sacrifice, astronomical observation, and eventually violent destruction at the hands of Spanish conquistadors. The most important of these was the Coricancha in Cusco, a gold-covered complex dedicated to the sun god Inti, but temples and mountaintop shrines stretched across the entire empire. What happened at these sites ranged from the deeply sacred to the deeply disturbing.
Daily Rituals at the Coricancha
The Coricancha, meaning “golden enclosure,” functioned as the religious heart of the Inca Empire. Its interior consisted of four main chambers, each dedicated to a different deity: the moon, the stars, thunder, and rainbows. One chamber held a massive gold disc designed to catch and reflect sunlight throughout the temple. During the summer solstice, the disc illuminated a sacred space where only the emperor was permitted to sit.
Every morning before dawn, a group of women known as the Aclla, or “Chosen Women,” prepared food for Inti. When the sun rose, they offered the food with songs as it burned. These women also maintained a sacred fire within the temple and wove garments for the emperor and for religious ceremonies. The textiles they produced were considered the finest in the empire, and some were burned as offerings to the sun god.
Priests managed the spiritual life of the temple. They received offerings from pilgrims who had traveled long distances, burned food to “feed” the gods, and buried items in the temple or placed them in sacred spaces. Only priests were allowed to approach the huacas, sacred objects believed to hold spiritual power. Local leaders consulted with these priests on important decisions, and the priests in turn consulted the huacas for guidance.
Child Sacrifice on Mountaintop Shrines
The most unsettling events at Inca sacred sites involved the capacocha, a ritual that sacrificed children on high-altitude mountaintop shrines. These ceremonies marked major events like the death of an emperor or a military victory. Victims were typically boys between four and ten years old, or teenage girls around 14 to 15 who had been selected as “acllas,” or chosen ones.
Archaeological finds from sites across Argentina and Chile have confirmed the ethnohistorical accounts. At Mount Llullaillaco, which rises to nearly 22,100 feet in Argentina, excavations uncovered three children: a boy of about seven, a girl of roughly six, and a teenage girl around 15. On the Aconcagua massif, another seven-year-old boy was found with red pigment on his skin and clothing, traces of which also appeared in his vomit and feces, suggesting he ingested it before death. A girl of about twelve was recovered from Mount Quehuar.
Offerings buried with the children included Inca ceramic vessels that had held chicha (a fermented corn drink) and prized Spondylus seashells brought from the distant coast. After sacrifice, priests used organs for divination, reading them to determine whether the gods were satisfied or to predict the future.
Temples as Astronomical Instruments
Inca temples were not just places of worship. They were precision-built observatories. At Machu Picchu, which radiocarbon dating places as first occupied around 1435 and abandoned around 1495, multiple structures align with the June solstice at an azimuth of 65 to 245 degrees. The Temple of the Three Windows, forming the eastern side of the Sacred Plaza, faces the solstice sunset. Inside a rounded structure called the Torreon, a stone receives a direct ray of sunlight through an east-facing window during the June solstice.
These alignments were not decorative. The Inca used them to track agricultural seasons, schedule religious festivals, and reinforce the emperor’s connection to the sun. The Sacred Plaza itself is enclosed on three sides but open to the west, oriented precisely toward the solstice sunset.
Absorbing Older Gods
Not all Inca temples were built from scratch. When the Inca conquered new territory, they often absorbed existing sacred sites into their own religious system. Pachacamac, a large adobe temple complex near modern-day Lima, had been a pilgrimage site and oracle center long before the Inca arrived. Rather than replacing the deeply rooted worship of Pachacamac, a god of fire believed to be a son of the sun god, the Inca folded him into their own pantheon. The oracle continued to operate under Inca rule, and the site remained a major destination for worshippers across the empire.
How the Temples Were Built
The stonework at major Inca temples used a technique where each block was carefully shaped to fit snugly against its neighbors without any mortar. This precision masonry, reserved for temples, administrative buildings, and royal residences, gave the structures remarkable earthquake resistance. The stones could shift slightly during a tremor and then settle back into place, a quality that has allowed many Inca walls to survive for over 500 years while later Spanish constructions built on top of them have repeatedly crumbled.
The Spanish Destruction
In 1533, Francisco Pizarro’s forces reached Cusco and systematically dismantled the Coricancha. The immediate trigger was the ransom of the captured Inca emperor Atahualpa. To raise the enormous quantity of gold demanded, workers stripped the gold plates from the temple walls. The metal was melted into bars and shipped to Spain.
The destruction did not stop with the looting. The Spanish tore down the temple itself and used its precisely cut stones as the foundation for the Convent of Santo Domingo, a Catholic church that took roughly a hundred years to complete. This pattern repeated across the empire: Inca sacred sites were deliberately built over with Christian churches, both to repurpose the strong foundations and to symbolically replace one religion with another. Today, visitors to Cusco can still see the original Inca stonework protruding beneath the colonial church walls, a visible record of what the temples once were and what happened to them.