"Intriguing and stimulating." —Jane Smiley, Harper's In this real-life historical treasure hunt, bestselling author Graham Robb—"one of the more unusual and appealing historians currently striding the planet ( New York Times )"—reveals the mapping of ancient Gaul as a reflection of the heavens, demonstrates the lasting influence of Druid science and recharts the exploration of the world and the spread of Christianity. This "fascinating" ( Los Angeles Times ) history offers nothing less than an entirely new understanding of the birth of modern Europe.