A mysterious fire transformed North America's greatest city in 1170

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. » 9/26/13 3:12pm 9/26/13 3:12pm