Caminito del Rey

Even though I am just an audience of the video, when the artist walked through the metal tube, it makes me feel nervous. Unbelievably, so many tourists strolls around there, they are brave compared to me.

From Wiki

El Caminito del Rey (English: The King's pathway) is a walkway or via ferrata, now fallen into disrepair, pinned along the steep walls of a narrow gorge in El Chorro, near Álora in Málaga, Spain. The name is often shortened to El Camino del Rey.

The walkway has now gone many years without maintenance, and is in a highly deteriorated and dangerous state. It is one meter (3 ft) in width, and is over 700 feet (200 m) above the river. Nearly all of the path has no handrail. Some parts of the walkway have completely collapsed and have been replaced by a beam and a metallic wire on the wall. Many people have lost their lives on the walkway in recent years. After four people died in two accidents in 1999 and 2000, the local government closed the entrances. However, adventurous tourists still find their way into the walkway.

The regional government of Andalusia budgeted in 2006 for a restoration plan[1] estimated at € 7 million.