The world's greatest structures were all built through some combination of human ingenuity, perseverance, vision, will power and, in many cases, physical might. History's Great Structures examines the practical, technological, and political challenges encountered by the designers and builders; how these structures were used by the people of the time; and what has become of them today. A visual chronology, sidebars highlighting topics of interest, selected vocabulary words and facts, source notes, a bibliography for further research, and an index provide additional tools for student researchers.