If you like historical novels this is a gem. This book chronicles the 1893 World's Fair that took place in Chicago, also known as the World's Columbian Exposition. This book also follows the exploits of the serial killer Dr. H. H. Holmes who used the fair as a hunting ground.
The amazing history that took place building up to and during the Columbian Exposition is fascinating reading. The historical figures and technological firsts are like finding hidden prizes throughout the text. The dark side of the book, the young women who went missing before, during, and after the fair, make an interesting counter point. If you're interested in the history of the city of Chicago this book is a must read.
The book gets bogged down in minutia at times, but it was hard to put down when Larson was writing tight. I really enjoyed the stories it contains. Highly recommended.