Illustrated with over 200 colour photos and a dozen maps, this book tells the whole story of the building and rebuilding of the Great Wall from 7th century BC through to the 16th century. It takes readers on a tour along the entire lenth of the wall, describing the well-preserved beautiful towers and castles as well as the ruins and remains in no man''s land, explaining the historical background of the construction of the wall and giving architectural and engineering information.