1El Caminito Del Rey, Spain
![](https://earthology365.com/wp-content/uploads/2023/01/El-Caminito-Del-Rey-Spain-696x435.jpg)
Built in 1905, El Caminito del Rey was initially a path for workers to transport goods. Of course, the pathway is only three feet wide and dangles 330 feet up along the face of a cliff. When Spain’s King Alfonso XIII crossed the walkway in 1921, it earned the nickname “King’s Little Pathway.”