This example however, is extreme. This 9 minute video will keep you on the edge of your seat.
According to Wikipedia: El Caminito del Rey (English: The King’s little pathway) is a walkway, now fallen into disrepair, pinned along the steep walls of a narrow gorge in El Chorro, near Álora in the province of Málaga, Spain. The name is often shortened to Camino del Rey (English: King’s pathway).
The walkway is one metre (3 feet and 3 inches) in width, and rises over 100 metres (350 feet) above the river below. Constructed of concrete resting on steel rails supported by stanchions at around 45 degrees into the rock face, it is currently in a highly deteriorated state and there are numerous sections where part or all of the concrete top has collapsed. The result is large open air gaps that are bridged only by narrow steel beams or other support fixtures. Very few of the original handrails exist but a safety-wire runs the length of the path. Several people have lost their lives on the walkway in recent years and after two fatal accidents in 1999 and 2000 the local government closed both entrances, but not the gift shop.
Here’s the view from the ground: