2. Vitim River Bridge, Siberia
This converted train bridge was built across one of Russia’s busiest tributaries, the Lena River. Covered in slick ice most of the year, the six feet wide bridge can barely fit one car at a time.
The Vitim River Bridge is considered so treacherous that simply getting across it alive is an accomplishment. Seriously, “the 34 people who have done it created their own Facebook page.”