From the earliest colonial settlements to Cold War bunkers, the North American continent has been home to thousands of forts and fortress structures. Fortress America surveys the broad sweep of fortifications throughout North America-from seacoast forts of the late eighteenth century to wooden inland forts built to defend against Native American, English, French, or Spanish attack; from Civil War-era coastal and inland waterways forts to the Great Plains forts of the Old West; from World War II subterranean bunkers to Cold War concrete missile silos. The text of Fortress America is complemented with never-before-published photographs, and extraordinary drawings, cut-aways, and diagrams illustrating the design and structure of American forts.