Displaying results 161 of 180 - 256
Date Image Innovation City State Country
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
1864-1869 Chesbrough's Water Supply System Chesbrough's Water Supply System Chicago IL USA
1935-1937 Blue Ridge Parkway Blue Ridge Parkway Blue Ridge Mountains VA USA
1900 Chicago Sanitary and Ship Canal Reversal of the Chicago River Chicago IL USA
1940 Arroyo Seco Parkway Arroyo Seco Parkway Los Angelos CA USA
1911 Galveston Seawall and Grade Raising Galveston Seawall and Grade Raising Galveston TX USA
1803 Middlesex Canal Middlesex Canal Billerica MA USA
1944 Kentucky Dam Kentucky Dam Grand River KY USA
1922 Columbia River Scenic Highway Columbia River Scenic Highway Cascade Locks OR USA
1958 Mackinac Bridge Mackinac Bridge St Ignace MI USA
1869 Joining of the Rails - Transcontinental Railroad Joining of the Rails - Transcontinental Railroad Promontory UT USA
1855 Blenheim Bridge Blenheim Bridge Gilboa NY USA
1794 New Castle Ice Harbor New Castle Ice Harbor New Castle DE USA
1792 Great Falls Raceway and Power System Great Falls Raceway and Power System Paterson NJ USA
1943 Denison Dam Denison Dam Denison TX USA
1718-1744 The Espada Aqueduct, running over the Piedras Creek Acequias of San Antonio San Antonio TX USA

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