Watch | 10 Modern Marvels That Changed America

Erie Canal Albany, NY to Buffalo, NY

John A. Roebling Bridge, Cincinnati, OH to Covington, KY

Transcontinental Railroad, Omaha, NE to Sacramento, CA

Eads Bridge, St. Louis, MO to East St. Louis, IL

Reversal of the Chicago River, Chicago, IL

Holland Tunnel, New York, NY to Garden City, NJ

Hoover Dam, Arizona–Nevada Border

Colorado River Aqueduct, California

Interstate Highway System

Hurricane &amp; Storm Damage Risk Reduction System