Gr 4-7-Slim series titles that focus on how and why these early structures were built, construction obstacles, and cultural and practical significance. Restorations, and present conditions and uses are also examined. Information is presented in a straightforward manner with lots of description, but the writing is uneven. The one or two clear, captioned full-color photographs, diagrams, or computer-generated illustrations found on each spread are well placed and will aid understanding. Some descriptions would have benefited from visuals. Dimensions and measurements are given in the inch-pound and metric systems. The basic information is here, but lots of fine books already exist on these subjects. Libraries owning Elizabeth Mann's The Great Wall (2003), The Panama Canal (1998), and The Roman Colosseum (2003, all Mikaya) may not need these titles.-Kathleen Simonetta, Indian Trails Public Library District, Wheeling, IL Copyright 2005 Reed Business Information.