Displaying results 101 of 120 - 256
Date Image Innovation City State Country
1830-1860 Five Stone Arch Bridges Five Stone Arch Bridges Hillsborough NH USA
1938 Bonneville Dam, Columbia River System Bonneville Dam, Columbia River System Portland OR USA
1910 Fritz Engineering Laboratory Fritz Engineering Laboratory Bethlehem PA USA
1887 McNeill Street Pumping Station McNeill Street Pumping Station Shreveport LA USA
1793 U.S. Capitol U.S. Capitol Washington DC USA
1933-1941 Colorado River Aqueduct Colorado River Aqueduct CA USA
1899 Snoqualmie Falls Cavity Generating Station Snoqualmie Falls Cavity Generating Station Snoqualmie WA USA
1915 Flight of Five Locks Lockport NY USA
1943 Blimp Hangars Blimp Hangars Irvine CA USA
1929 Navajo Bridge Navajo Bridge Page AZ USA
1855 Whipple Truss Bridge Whipple Truss Bridge Schenectady NY USA
750-1180 Prehistoric Mesa Verde Reservoirs Prehistoric Mesa Verde Reservoirs Montezuma County CO USA
1880 Cumbres and Toltec Scenic Railway Cumbres and Toltec Scenic Railway Antonito CO USA
1947 Maine Turnpike Maine Turnpike ME USA
1874 Eads Bridge Eads Bridge East St. Louis IL USA
1911 Theodore Roosevelt Dam Theodore Roosevelt Dam & Salt River Project Tonto National Forest AZ USA
1728-1821 Emanuel Bowen's 1747 map showing the boundary between Virginia and North Carolina. Royal Colonial Boundary of 1665 Middlesboro KY USA
1803 Cape Hatteras Lighthouse Cape Hatteras Lighthouse Cape Hatteras NC USA
1871 Kamehameha V Post Office Kamehameha V Post Office Honolulu HI USA
1801 Philadelphia Municipal Water Supply Philadelphia Municipal Water Supply Philadelphia PA USA

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