The Greatest Archaeological Discoveries in the Americas

The fluted projectile points characteristic of the Paleo-Indian period date from approximately 13,050 to 12,750 years ago. Named after the type site near Clovis, New Mexico, these stone tools were discovered in 1929 along with the remains of Colombian mammoths.

This 15th-century Inca citadel, built around 1450, likely served as the royal residence of Emperor Pachacuti in the Andes. Hiram Bingham rediscovered it in 1911. Its walls, built of precisely cut dry stone, fit together so perfectly that not even a knife blade can slip between the stones, despite the absence of mortar.

An almost complete male skeleton discovered in 1996 near the Columbia River in Washington State dates back to approximately 8,400 to 8,690 years before our era. Genetic studies show that it is very closely related to modern Native Americans, indicating continuity with indigenous populations over the millennia, despite controversial initial analyses of physical characteristics.

The largest pre-Columbian city in northern Mexico reached its peak between 1050 and 1150 AD, with a population of 10,000 to 20,000 at its height. The Monks Mound rises about 30 meters and covers more than 5.6 hectares, making it the largest prehistoric earthen structure in the Americas at its peak.

The Bering Land Bridge connected Siberia and Alaska during the last ice age due to falling sea levels, and it enabled human migration to the Americas. Genetic and environmental evidence suggests that the ancestors of Native Americans spent up to 10,000 years in Beringia before moving southward about 15,000 years ago.

The Anzick site in Montana is the only known Clovis burial site. Discovered in 1968, it dates back approximately 12,600 to 13,000 years and is remarkably well-preserved. It contained the remains of a young child buried with more than 100 Clovis stone and antler tools that had been ceremonially coated with red ochre.

The massive basalt sculptures of the ancient Olmec civilization of Mesoamerica date back to at least 900 BCE and depict powerful rulers. They were transported more than 150 km from the quarries. Seventeen heads have been discovered—all measuring between 1.5 and 3.3 meters in height and weighing between 6,000 and 50,000 kg—at sites such as San Lorenzo.

The giant geoglyphs of the Nazca Desert in Peru were created by the Nazca culture between 500 B.C. and 500 A.D. They are a testament to incredible artistic talent and are visible from the air. They include more than 800 straight lines, 300 geometric shapes, and 70 biomorphic figures, with the largest stretching over 200 meters across the desert.

A Paleo-Indian skeleton dating back approximately 11,500 years, discovered in 1974 in a cave near Belo Horizonte, Brazil, provides remarkable insight into the earliest human settlements in the Americas. Dated to approximately 11,243 to 11,710 years ago, this woman died in her early twenties and had cranial features once associated with various scientifically debated migration patterns.

This major center of Pueblo ancestral culture, located in New Mexico and dating from approximately 850 to 1250 AD, is characterized by impressive large houses and a sophisticated road network. Pueblo Bonito comprises hundreds of rooms and kivas built using advanced masonry techniques, and the Great Houses are astronomically aligned with the solar and lunar cycles.

The Hopewell culture built vast earthen enclosures and mounds in the Ohio Valley for ceremonial purposes between approximately 200 B.C. and 500 A.D. The Newark Earthworks feature massive geometric shapes such as circles and octagons aligned with lunar cycles, and some of the earthworks are aligned with the 18.6-year lunar cycle.

The Coso Rock Art District in California is home to thousands of ancient rock carvings created by Native American groups over millennia of continuous occupation throughout the region. Bighorn sheep and anthropomorphic figures date back 10,000 to 19,000 years, and some petroglyphs depict hunting scenes.

This pre-Clovis site in Chile dates back approximately 14,500 years and provides evidence of early human presence in South America. Excavations have uncovered wooden structures, plant remains, and tools, and the humid conditions have preserved perishable food items such as seaweed and potatoes, which are rarely found at ancient settlement sites.

One of Guatemala’s vast ancient Maya cities reached its peak between 200 and 900 AD. It was characterized by imposing pyramids and sophisticated urban planning. Temple IV rises more than 70 meters high, and excavations show that the population numbered between 60,000 and 90,000, with advanced engineering structures such as reservoirs and roads connecting this gigantic city.

Fluted projectile points associated with the Folsom tradition date to approximately 12,800 to 10,200 years ago in the central and western United States. First identified in 1927–1928 at the Folsom site in New Mexico, a point was conclusively found embedded between the ribs of an extinct Bison antiquus.

A large pre-Columbian city in central Mexico flourished between about 100 B.C. and 650 A.D., reaching a peak population of approximately 80,000 to 100,000 inhabitants. The Pyramid of the Sun rises more than 60 meters, and the Avenue of the Dead stretches over 2.5 kilometers, aligned with celestial events.

The capital of the Chimú Kingdom, in northern Peru, flourished from about 850 to 1470, becoming the largest adobe city in pre-Columbian America. Nine large fortified citadels housed the elite classes, and the city once had a population of between 60,000 and 100,000, built entirely without fired bricks or stone structures.

Juanita, a young Inca girl between the ages of 12 and 15 who was sacrificed around 1440–1480 AD, was discovered in 1995 on Mount Ampato, preserved by the cold. She was found with her internal organs, clothing, and offerings intact, having been killed by a single blow to the head as part of a ritual sacrifice known as capacocha.

Serpent Mound, in Ohio, is the largest known prehistoric earthen mound in the world—a 410-meter-long earthen serpent with a coiled tail. Radiocarbon dating places its construction around 300 B.C. by the Adena culture, and the serpent appears to be swallowing an egg-shaped mound at its head.

The largest cave dwelling in North America was built by the Ancestral Puebloans around 1190–1300 AD. It consisted of approximately 150 rooms and 23 kivas. It housed about 100 people in a massive natural alcove, and two kivas were connected by an underground tunnel, which was likely used for spectacular rituals.