We had listened to this book on CD a while back, and I finally got around to actually reading the book (I miss a lot of details on CD). This beautifully written book is the tale of the 1893 Chicago World's Fair: it centers around the architects who got it built (led by Daniel Burnham, who also built the Flatiron Building in NYC), and the first known urban serial killer, who preyed upon women in Chicago during that time.
Did you know that Cracker Jack, Aunt Jemima's, the zipper, the Ferris wheel, and the electric dishwasher were all first introduced at that fair? The fair was also the first major demonstration of widespread use of AC electricity. I recommend this book highly.