7. Puente de Ojuela (Mexico)

Ojuela was a small mining settlement located northwest of the city of Durango, Durango, in northern Mexico. The settlement is now well known as a ghost town as a result of the mineral ore being exhausted. The only surviving and functional structure is a suspension bridge. The bridge is known as "Puente de Ojuela" (Ojuela Bridge) by the locals. The original bridge was designed by the famous Roebling brothers, who also designed the Brooklyn Bridge. At the time of construction, the Puente de Ojuela was the third longest suspension bridge in the world. It was rebuilt recently by the Peñoles Company, the original was scrapped and only the main arches are now displayed at the Torreón Exposition Center.