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Machu Picchu
What is Machu Picchu, and where is it?
Machu Picchu is a 15th-century Inca citadel perched at 2,430 meters on a mountain ridge in southern Peru's Eastern Cordillera, roughly 80 kilometers northwest of Cusco. Built around 1450, likely as a royal estate for the Inca emperor Pachacuti, it remained unknown to Spanish conquistadors and survived largely intact while much of Inca civilization was destroyed.
Location and Topography
The citadel sits on a narrow saddle between two peaks—Machu Picchu and Huayna Picchu—in the Eastern Cordillera of southern Peru. At 2,430 meters elevation, the site occupies a mountain ridge in Urubamba Province, about 80 kilometers northwest of Cusco. The Urubamba River carves a deep canyon through subtropical highlands far below, creating a dramatic vertical separation between the ruins and the valley floor.
This geography produces a subtropical mountain climate with substantial rainfall—over 1,800 millimeters annually since 1450. The combination of high altitude and deep canyon shelter creates a liminal environment where clouds frequently obscure the peaks. The steep terrain and dense vegetation that now surrounds the site made it nearly invisible to outsiders for centuries after its abandonment.
Construction and Inca Stonework
Radiocarbon dating places Machu Picchu's occupation between approximately 1420 and 1530, with construction likely ordered by Pachacuti Inca Yupanqui after his conquest of the middle and lower Urubamba Valley. The site was built in the classical Inca style using finely crafted dry-stone walls—a technique visible in structures like the Temple of the Sun, the Temple of the Three Windows, and the Intihuatana ritual stone. The precision of Inca masonry remains evident in the surviving architecture.
The builders engineered extensive agricultural terraces (andenes) covering about 4.9 hectares to manage the steep slopes. These terraces featured layered construction with larger stones at the base, loose gravel, mixed sand and gravel, and topsoil imported from the valley floor. The design prioritized drainage of excess water rather than irrigation, a critical adaptation to the site's high rainfall. Evidence shows that landslides occurred during construction, and the Inca stabilized these shifts while continuing to build around the affected areas.
Royal Estate and Population
Machu Picchu functioned as a seasonal royal retreat and estate, likely belonging to Pachacuti but not inherited through succession. An estimated 750 people lived there during its active period, with most serving as support staff (yanaconas) who remained permanently. Religious specialists and temporary workers (mayocs) also resided at the site. During winter, the harsher season, staffing was reduced to a few hundred servants and religious specialists focused on maintenance.
Skeletal analysis reveals that the retainer community came from diverse ethnic backgrounds across the Inca Empire—Andean, coastal, Ecuadorian, and Amazonian ancestries. Bone chemistry and parasitic markers indicate these were immigrants, not lifelong residents. Most inhabitants showed fewer signs of arthritis and fractures than typical Inca populations, suggesting they performed lighter labor than those engaged in heavy construction or military service. The site's diet shifted toward corn after settlement, reflecting the local agricultural focus.
Food Production and Animal Husbandry
The terraced fields at Machu Picchu produced mainly maize and potatoes, but this output was insufficient to feed 750 people. Archaeological evidence indicates that most food was imported from surrounding valleys and distant regions. Maize held ceremonial importance alongside its nutritional role. The abundant rainfall meant the terraces required drainage rather than irrigation, a fundamental difference from many other Inca agricultural sites.
Animals brought to the site included llamas and alpacas, species that naturally inhabit altitudes of 4,000 meters rather than Machu Picchu's 2,400 meters. These camelids were likely transported from the Puna region for meat and pelts. Guinea pigs were found in special tomb caves, suggesting use in funerary rituals consistent with Inca practice. Six dogs were recovered from among human remains, indicating they served as companions of the dead.
Abandonment and Western Rediscovery
Machu Picchu was abandoned around the mid-16th century, likely due to the collapse of Inca rule and disease following European contact. Smallpox may have killed many inhabitants before Spanish conquistadors reached the area. The site's remote location and the jungle's rapid overgrowth kept it hidden from Spanish notice—a crucial factor in its preservation. By the late 16th century, Spanish records mention indigenous people referring to the site as Huayna Picchu, its probable original name.
Peruvian explorer Agustín Lizárraga reached the ruins in 1902 and marked his name on the Temple of the Three Windows. In 1911, American historian Hiram Bingham arrived, guided by local farmer Melchor Arteaga. Bingham found Lizárraga's 1902 inscription but initially acknowledged him as the discoverer. Over time, Bingham's accounts shifted, and he eventually claimed credit for finding the site, arguing he had brought it to international attention. Bingham's 1911 publications and subsequent expeditions (1912, 1914–1915) made Machu Picchu known to the world, though local people had always known of its existence.
Machu Picchu at a glance
Questions about Machu Picchu
What was the original name of Machu Picchu?
The original name is uncertain, but a 2021 study suggests it was likely called Huayna Picchu, after the smaller peak nearby, or simply Picchu. The name Machu Picchu—meaning old peak in Quechua—became associated with the ruins through Hiram Bingham's 1911 publications. Late 16th-century Spanish records document indigenous people referring to the site as Huayna Picchu.
How many people lived at Machu Picchu?
An estimated 750 people lived at the site during its active period as a royal estate. Most were support staff (yanaconas) who remained there permanently. During winter, staffing was reduced to a few hundred servants and religious specialists. Skeletal analysis shows the population came from diverse ethnic backgrounds across the Inca Empire.
Why did the Spanish conquistadors never find Machu Picchu?
Machu Picchu's remote mountain location and the rapid overgrowth of jungle vegetation kept it hidden from Spanish notice. The site was abandoned around the mid-16th century, likely due to disease and the collapse of Inca rule following European contact. This isolation allowed the ruins to survive largely intact while much of Inca civilization was destroyed elsewhere.
What evidence exists for rituals and sacrifices at Machu Picchu?
Archaeological evidence indicates animal offerings, particularly camelids, were common at Machu Picchu. The Temple of the Condor and adjacent caves are interpreted as sites for ritual sacrifice. Numerous camelid remains have been associated with funerary rituals and ceremonial offerings. However, there is little direct evidence for human sacrifice at the site, unlike at other major Inca huacas.
When was Machu Picchu designated as a protected site?
Peru designated Machu Picchu a National Historic Sanctuary in 1981. UNESCO recognized it as a World Heritage Site in 1983. In 2007, it was named one of the New Seven Wonders of the World. Visitor numbers exceeded 1.5 million in 2025, and no other international tourist destination in Peru received more people.
Sources and further reading
This article was written from the reference material below, retrieved and reviewed for source alignment on September 13, 2026. Use official local sources for changing access or travel information.
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