History.com: The Little Known Peruvian Pyramids That Are as Old as Egypt's

Caral was an architectural marvel - a 1,500-acre complex constructed by the oldest known civilization in the Western Hemisphere. Colossal pyramid structures in the Americas as old as those in Egypt? The Sacred City of Caral-Supe, in central coastal Peru, boasts an impressive complex of ancient monumental architecture constructed around 2600 B.C., roughly the same time as the earliest Egyptian pyramid. Archaeologists consider Caral one of the largest and most complex urban centers built by the oldest known civilization in the Western Hemisphere.