Teufelsbrücke on the St Gotthard Pass route, Switzerland (1888)

First built as a wooden bridge over the Reuss river around 1,220, the Teufelsbrücke (Devil's Bridge) opened the Gotthard Pass route for travelers and pack animals.

The wooden bridge would be frequently damaged when the river and streams were strong and flush with the snow melting in the mountains.

A more solid bridge - made of stone -  was built three centuries later in 1,595 to replace it. This bridge is the smaller one in the above photo.