The world is a really big place, and throughout human history, we’ve built and then lost a whole bunch of major cities.
Beneath the freeways of East St. Louis in Illinois there lie the ruins of a city built nearly a millennium ago, around towering earthen pyramids. Today called Cahokia, it held as many as 40 thousand people, and their influence spread throughout the southeast U.S. — mostly due the popularity of a game called chunkey.
One thousand years ago, in the place where St. Louis, Missouri now stands, there was once a great civilization whose city center was ringed with enormous earthen pyramids, vast farmlands, and wealthy suburbs. For hundreds of years it was the biggest city in North America. Then a mysterious fire changed everything.