Cahokia Mounds State Historic Site (Illinois): Built by indigenous peoples of the Mississippian culture between 900 and 1200 CE, these ancient mounds served as the largest pre-Columbian settlement north of Mexico.
Newark Earthworks (Ohio): Constructed by the Hopewell culture between 100 BCE and 500 CE, these geometric earthworks are among the most extensive in the world, highlighting the sophisticated engineering.
Watson Brake (Louisiana): Dating back to approximately 3500 BCE, Watson Brake consists of a series of earthen mounds arranged in a circular pattern, making it one of the earliest mound complexes in North America.
Monks Mound (Missouri): Located at Cahokia Mounds State Historic Site, Monks Mound is the largest pre-Columbian earthwork in North America, built around 900 CE and serving as the centerpiece of the ancient city of Cahokia.
Pinson Mounds (Tennessee): Constructed by Native American peoples of the Middle Woodland period between 1 and 500 CE, Pinson Mounds features a complex of earthen mounds.
Rock Eagle Effigy Mound (Georgia): Created by indigenous peoples of the Woodland period around 1000 BCE, this effigy mound represents a bird with outstretched wings.
Poverty Point (Louisiana): Dating back to approximately 1700 BCE, Poverty Point is a complex of earthen mounds and ridges, including one of the largest prehistoric earthworks in North America.