Displaying results 101 of 120 - 256
| Date | Image | Innovation | City | State | Country Sort descending |
|---|---|---|---|---|---|
| 1728-1821 | 
|
Royal Colonial Boundary of 1665 | Middlesboro | KY | USA |
| 1855 | 
|
Blenheim Bridge | Gilboa | NY | USA |
| 1801 | 
|
Philadelphia Municipal Water Supply | Philadelphia | PA | USA |
| 1864-1869 | 
|
Chesbrough's Water Supply System | Chicago | IL | USA |
| 1718-1744 | 
|
Acequias of San Antonio | San Antonio | TX | USA |
| 1935 | 
|
Huey P. Long Bridge | Bridge City, LA 70094 | LA | USA |
| 1803 | 
|
Middlesex Canal | Billerica | MA | USA |
| 1944 | 
|
Kentucky Dam | Grand River | KY | USA |
| 1672-1695 | 
|
Castillo de San Marcos | St. Augustine | FL | USA |
| 1935-1937 | 
|
Blue Ridge Parkway | Blue Ridge Mountains | VA | USA |
| 1909 | 
|
Manhattan Bridge | Brooklyn | NY | USA |
| 1869 | 
|
Joining of the Rails - Transcontinental Railroad | Promontory | UT | USA |
| 1834 | 
|
Ascutney Mill Dam | Windsor | VT | USA |
| 1932 | 
|
Going-to-the-Sun Road | West Glacier | MT | USA |
| 1794 | 
|
New Castle Ice Harbor | New Castle | DE | USA |
| 1930 | 
|
Columbia-Wrightsville Bridge | West Hempfield | PA | USA |
| 1821 | 
|
Lowell Waterpower System | Lowell | MA | USA |
| 1885 | 
|
Davis Island Lock and Dam | McKees Rocks | PA | USA |
| 1835 | 
|
Thomas Viaduct Railroad Bridge | Arbutus | MD | USA |
| 1785 | 
|
Point of Beginning, U.S. Public Lands | East Liverpool | OH | USA |
