The novel is a sprawling epic that spans the period from the 1893 World's Fair to the years following World War I. It follows the stories of several characters including the anarchist Traverse family, a group of balloonists, a detective, and a mathematician. The book explores themes of anarchism, capitalism, and technology, and incorporates elements of science fiction, adventure, and historical fiction. It is noted for its complex structure and dense, multifaceted narrative.

"Gulag: A History" provides an in-depth historical account of the Soviet Union's forced labor camp system, known as the Gulag. The book explores the inception of these camps during the reign of Vladimir Lenin, their expansion under Joseph Stalin, and their eventual decline and closure. It also delves into the daily lives of the prisoners, their hardships, and the brutal conditions they endured. The book is based on a wealth of archival material, personal interviews, and memoirs, offering a comprehensive understanding of one of the darkest periods in human history.