World's top scariest cliff walks（2）

（6）The Grand Canyon Skywalk is a transparent horseshoe-shaped cantilever bridge and tourist attraction in Arizona USGS topographic maps show the elevation at the Skywalk's location as 4,770 ft and the elevation of the Colorado River in the base of the canyon as 1,160 ft, and they show that the height of the precisely vertical drop directly under the skywalk is between 500 ft and 800 ft. 

(7)The cliff path in Tianmen Mountain

The total length of the path, and the an average elevation is 1400 meters. 

(8)The Ledge transforms how visitors experience Chicago. At 1,353 feet up, The Ledge’s glass boxes extend out 4.3 feet from the skyscraper’s Skydeck on the 103rd floor, providing never-before-seen views of the city.

The tower is a world-renowned building, a Chicago icon. The eighth-tallest building in the world, it remains the tallest building in the Western Hemisphere, standing 1,450 feet and 110 stories tall.

(9) HuaShan Mountain Cliffiside Plank Walk.The exhilarating mountain hike is not for the faint of heart. There is a cost of approximately 30 yuan (just under $5 usd) and you are given two straps to hook onto wires on the path. The plank path includes steel rod ladders, footholds carved out of the cliff and narrow wooden plank walks. All of this is located thousands of feet above ground.