Displaying results 221 of 240 - 256
Date Image Innovation City State Country
1871 Druid Lake Dam Druid Lake Dam Baltimore MD USA
1811-1839 National Road National Road Wheeling WV USA
1901 West Baden Springs Hotel West Baden Springs Hotel Orange County IN USA
1864 Cabin John Aqueduct Cabin John Aqueduct Cabin John MD USA
1883 Smithfield Street Bridge Smithfield Street Bridge Pittsburgh PA USA
1859 Iron Building of the U.S. Army Arsenal Iron Building of the U.S. Army Arsenal Watervliet NY USA
1833 Charleston - Hamburg Railroad Charleston - Hamburg Railroad Charleston SC USA
1870 Modified Fink trussed Girder bridge Fink Deck Truss Bridge Lynchburg VI USA
1901 Philadelphia City Hall Philadelphia City Hall Philadelphia PA USA
1883 Seventh Street Improvement Arches Seventh Street Improvement Arches St. Paul MN USA
1829 Chesapeake and Delaware Canal Chesapeake and Delaware Canal New Castle DE USA
1886 Lawrence Experiment Station Lawrence Experiment Station Lawrence MA USA
1791-1795 Vancouver's Mapping of the West Coast of North America Vancouver's Mapping of the West Coast of North America N/A USA
1887 McNeill Street Pumping Station McNeill Street Pumping Station Shreveport LA USA
1793 U.S. Capitol U.S. Capitol Washington DC USA
1956 Lake Pontchartrain Causeway Lake Pontchartrain Causeway Bridge New Orleans LA USA
1911 Belle Fourche Dam Belle Fourche Dam Belle Fourche SD USA
1941 Grand Coulee Dam Grand Coulee Dam Grand Coulee WA USA
1902 Rockville Stone Arch Bridge Rockville Stone Arch Bridge Marysville PA USA
1830-1860 Five Stone Arch Bridges Five Stone Arch Bridges Hillsborough NH USA

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