Four amazing chapters in The History Book: History Revealed goes back in time to uncover a host of extreme events, ideas and people. In Unearth History, dig deep to discover the mysteries of the past, from ancient artefacts to lost cities. Explore a world of colossal constructions, such as Machu Picchu, that reveal much about our past in Building History. Finally, in Brutal Battles, discover the facts behind battles, such as the world wars, that have become legend.