Displaying results 241 of 256 - 256
| Date | Image | Innovation | City | State | Country Sort descending |
|---|---|---|---|---|---|
| 1775 | 
|
King's Road | New Smyrna | FL | USA |
| 1911 | 
|
Theodore Roosevelt Dam & Salt River Project | Tonto National Forest | AZ | USA |
| 1728-1821 | 
|
Royal Colonial Boundary of 1665 | Middlesboro | KY | USA |
| between 1842 and the | 
|
Baltimore & Ohio Roundhouse & Shop Complex | Martinsburg | WV | USA |
| 1929 | 
|
Goodyear Airdock | Akron | OH | USA |
| 1935-1937 | 
|
Blue Ridge Parkway | Blue Ridge Mountains | VA | USA |
| 1803 | 
|
Middlesex Canal | Billerica | MA | USA |
| 1930 | 
|
Zion Mt. Carmel Tunnel and Highway | Hurricane | UT | USA |
| 1944 | 
|
Kentucky Dam | Grand River | KY | USA |
| 1837 | 
|
Muskingum River Navigation System | Zanesville | OH | USA |
| 1805 | 
|
Dismal Swamp Canal | Chesapeake | VA | USA |
| 1794 | 
|
New Castle Ice Harbor | New Castle | DE | USA |
| 1918 | 
|
Brooks AFB, Old Hangar 9 | San Antonio | TX | USA |
| 1935 | 
|
Hoover Dam | Boulder City | AZ | USA |
| 1869 | 
|
Joining of the Rails - Transcontinental Railroad | Promontory | UT | USA |
| 1905 | 
|
Victoria Falls Bridge | Zimbabwe |
