The Aztecs built an expansive system of aqueducts that supplied water for irrigation and bathing.

Though they could build complex suspension bridges, the Aztecs could not ward off diseases brought over by the Spanish.

Well before Europeans arrived, North America contained a number of large cities that rivaled those an ocean away.

Explore the origins of the Temple of Chichen Itza, a Mayan pyramid in modern-day Mexico that features several unique features, including an echo designed to sound like a bird call.