Columbus Day is celebrated every October, but our understanding of Christopher Columbus and his “discovery” of America has changed dramatically since Columbus Day became a federal holiday in 1937. This change of perception has come with more knowledge of what the Americas and Native American cultures were truly like before Europeans arrived. Highly complex and organized communities could be found in places like the Aztec capital of Tenochtitlan. This public radio story paints a vivid picture of the Americas before Columbus and compares our original understandings of the area with reality.