The Caminito del Rey is a path that was built along a cliff face and gorge high above the Guadalhorce River in order for workers to maintain a hydro dam water channel that ran through the gorge. The original path began construction in 1901, and was completed in 1905.
The original path was constructed of concrete and rested on steel rails supported by bars built into the rock face. It deteriorated over the years and there were a lot of sections where part or all of the concrete top had collapsed. By the 1990's, the result was that large open-air gaps were bridged only by narrow steel beams.