Kinzua Bridge, Railroad bridge in Pennsylvania
The Kinzua Bridge was once the world's longest and tallest railroad structure.
Built in 1882, the bridge stood for more than a century before half of it was destroyed by a tornado.
The Kinzua Bridge is an iconic symbol of American engineering and history.
Visitors can walk on the remaining sections of the bridge at Kinzua Bridge State Park.
A skywalk with a glass-bottomed observation deck offers breathtaking views of the Kinzua Gorge.
Location: Pennsylvania
Height: 92 m
Length: 625 m
Material: steel
Source: Wikimedia