Book excerpt: Ingenious Ireland takes readers on a magnificent tour of the country's natural wonders, clever inventions, and historic sites. Richly illustrated and meticulously compiled, Ingenious Ireland introduces readers to the complete history, culture, and landscape of all thirty-two Irish counties. Mary Mulvihill unearths Ireland's treasures and divulges her secrets, such as the oldest fossil footprints in the Northern hemisphere, the advent of railways, the invention of milk of magnesia, and why the shamrock is a sham. Fascinating and comprehensive, Ingenious Ireland unravels the mysteries and marvels of this remarkable country.