Displaying results 181 of 200 - 256
| Date | Image | Innovation | City | State | Country Sort descending |
|---|---|---|---|---|---|
| 1859 | 
|
Watertown Arsenal | Watertown | MA | USA |
| 1940s | 
|
Tacoma Narrows Bridges | Tacoma | WA | USA |
| 1905-1910 | 
|
Buffalo Bill Dam | Cody | WY | USA |
| 1837 | 
|
Houston Ship Channel | Houston | TX | USA |
| 1761 | 
|
Sewall's Bridge | York | ME | USA |
| 1855 | 
|
International Boundary Marker #1 | El Paso | TX | USA |
| 1834 | 
|
Allegheny Portage Railroad | Duncansville | PA | USA |
| 1825 | 
|
Erie Canal | NY | USA | |
| 1940 | 
|
Pennsylvania Turnpike (Old Section) | Harrisburg | PA | USA |
| 1825 | 
|
Ohio Canal System | N/A | OH | USA |
| 1905 | 
|
Cheesman Dam | Sedalia | CO | USA |
| 1845-1877 | 
|
Tennessee State Capitol | Nashville | TN | USA |
| 1924-1921 | 
|
River des Peres Sewage & Drainage Works | St. Louis | MO | USA |
| 1894 | 
|
Union Station | St. Louis | MS | USA |
| 1818 | 
|
Montgomery Bell's Tunnel | Kingston Springs | TN | USA |
| 1889 | 
|
Alvord Lake Bridge | San Francisco | CA | USA |
| 1902 | 
|
Cortland Street Drawbridge | Chicago | IL | USA |
| 1931 | 
|
Rogue River Bridge | Gold Beach | OR | USA |
| 1871 | 
|
Druid Lake Dam | Baltimore | MD | USA |
| 1811-1839 | 
|
National Road | Wheeling | WV | USA |
