1. Mount HuaShan, Huayin, China

Distance: Varies depending on summit
Time: All Day
Best Time to Go: April to October

My legs turn to jelly just looking at this hike. This hike makes everyone’s list of most dangerous hikes in the world and for a good reason. Besides steep staircases and vertical ascents, the plank trail is made of wooden platforms bolted to the mountainside.

2. El Caminito del Rey (The King’s Pathway), El Chorro, Spain

Distance: 4.8 Miles
Time: 4-5 Hours
Best Time to Go: Year Round

This hike is made up of a three-foot wide walkway that is barely attached to a sheer cliff. There are potions with big gaps and parts where you even have to do some low-level rock climbing. The one comfort is that there is a safety wire running along the path that can be clipped into.

UPDATE: They recently underwent a huge renovation and reopened to the public in March 2015 with a much safer and accessible walkway.