World's Most Dangerous Trail Reopens After 15 Years 'El Caminito del Rey' -- The King's Little Pathway -- is almost 100 years old.

 -- One of the world's scariest hikes is reopening for travelers.

El Caminito del Rey is a 5-mile-long path in Spain that takes four to five hours to complete, according to the trail's website.

The walkway takes you through the incredibly steep El Chorro gorges on thin boardwalks.

It is almost 100 years old -- originally opened in 1921 by King Alfonso XIII, according to the website. The walkway just reopened last week, however, after being closed for 15 years and undergoing almost $2.5 million worth of renovations.

While the pathway is in a gorgeous natural setting, the site warns potential visitors of the dangerous conditions.

"The boardwalks and a hanging footbridge that stands at 105 metres height, as well as steep walls, make many visitors feel inevitably dizzy," it says.

They call the path "risky" and "hazardous," because of the steep heights and narrow parts.

"Visitors are not risking their lives at all, but they must be aware of the strong impression this place might make on them," the site says.