Most terrifying precipices in the world

Iguazu Falls, Brazil and Argentina - A series of 270 waterfalls along the border of Argentina and Brazil, the Iguazu Falls are truly breathtaking.

Shilinxia Scenic Area, China - Located on the main peak of Shilin Gorge, this circular glass viewing platform hangs over 107 feet (32.8 m) above the cliff.

Willis Tower, USA - Formerly known as the Sears Tower, Willis Tower offers an incredible view over Chicago. Located on the 103rd floor.

Columbia Icefield Skywalk, Canada - Situated midway between Jasper and Banff National Parks, the Columbia Icefield Skywalk is a glass-floor observation platform overlooking a 918-foot.

Sky Tower, New Zealand - Taking a stroll along a footpath that's nearly four feet (1.2 m) wide doesn't sound so bad. Unless you're 632 feet (193 m) above the streets of Auckland.

Dachstein Glacier, Austria - Known as the "Stairway to Nothingness," this precarious perch 9,000 feet (2,743 m) up in the Austrian Alps isn't recommended for acrophobes.

Langkawi Sky Bridge, Malaysia - Located at the peak of Gunung Mat Cincang, this 410-foot (125-m) curved bridge hangs 2,170 feet (660 m) above sea level.

5 Fingers Platform, Austria - Named after its unique hand-like shape, the 5 Fingers in the Dachstein Mountains reaches out 1,300 feet (396 m)over Hallstatt. Cool, yet creepy!

Zhangjiajie Glass Walk, China - Hanging off the side of the Tianmen Mountains, this glass skywalk isn't to be messed with. Situated 4,700 feet (1,432 m) above sea level.

British Airways i360, England - The British Airways i360 in Brighton is the world's tallest moving observation tower. At 531 feet (162 m).

Cliffwalk, Canada - The Cliffwalk is a 700-foot (213-m) walkway above the Capilano River in British Columbia. The highest point is 300 feet (90 m) above the river.

EdgeWalk CN Tower, Canada - Located at a height of 1,168 feet (356 m), the EdgeWalk in Toronto allows visitors to walk around the edge of Canada's tallest structure.

First Cliff Walk, Switzerland - This elevated walkway is perched to the side of a mountain at about 6,500 feet (2,000 m). Whatever you do, don't look down!

Messner Mountain Museum Corones, Italy - Embedded within the summit of Mount Kronplatz, the platform of this futuristic museum is located 7,463 feet (2,275 m) above sea level.

Melbourne Skydeck, Australia - Located at the Eureka Tower in Melbourne, the observation deck occupies the entire 88th floor. And at 935 feet (285 m).

OCBC Skyway, Singapore - The OCBC Skyway is located in Singapore's Gardens by the Bay, a 16-story high vertical garden. The Skyway is a 400-foot (121-m).

Top of the Rock, USA - On top of the Rockefeller Center one can enjoy the Big Apple from terrifying heights.

Step into the Void, France - This five-sided glass structure, located at the top of the Aiguille du Midi mountain peak, is found at an altitude of 12,604 feet (3,842 m).