From the backbreaking construction of the Erie Canal to the complexities of Boston's Central Artery/Tunnel Project (the "Big Dig"), George Sullivan describes the processes involved and the impact of the building of America's most important structures. Seventeen major bridges, dams, tunnels, skyscrapers, and monuments in California, New York, Colorado, Missouri, Illinois, Virginia, and the District of Columbia are featured in this beautifully illustrated book. Americans didn't let mountains stand in the way of trade with the American West — they tunneled right through them to make the Cascade Tunnel and Hoosac Tunnel. When water and power were needed, they built huge dams, such as the Fort Peck Dam and the Hoover Dam. Faced with water to cross, they built beautiful bridges, such as the Brooklyn Bridge and the Chesapeake Bay Bridge-Tunnel. And the American character is best reflected by the building it invented, the skyscraper.