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					Not 
					content with having the tallest building in America , the 
					owners of Willis Tower in Chicago have installed four glass 
					box viewing platforms which stick out of the building 103 
					floors up.  | 
							 
						 
					 
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					The 
					balconies are suspended 1,353 feet in the air and just out 
					four feet from the building's Skydeck. | 
									
									
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						Visitors get their first view from The Ledge -- 
						four glass balconies suspended from the Tower | 
									
									
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						Fearless: 
						Five-year-old Anna Kane
						
						
						spreads out on the floor of the 10ft square box
						
						
						
						 which is 1,353 ft up 
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						John Huston, one of the owners of the Willis Tower,
						
						
						even admitted to getting 'a little queasy'
						
						
						when he ventured out on to the balcony.
						
						
						 However, 
						after 30 or 40 trips,
						
						
						he seems to have become used to it. 
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						Long way up: 
						Even the floor of the platforms are glass
						
						
						- few are brave enough to look straight down. Although 
						some adults felt dizzy after experiencing The Ledge,
						children seemed to take it in their stride. 
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						Designers say the platforms -
						
						
						collectively dubbed The Ledge -
						
						
						have been purposely created to make visitors feel
						
						
						as they are floating above the city.
						
						
						The reward is unobstructed views of Chicago from the 
						building's west side
						
						
						and a heart-stopping vista of the street
						
						
						and Chicago River below -
						
						
						for those brave enough to look straight down.
						
						
						 It's like 
						walking on ice.
						 
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						Architect Ross Wimer said:
						
						
						 'We did studies that showed a 4' X 4' deep enclosure
						
						
						makes you feel like you're detached from the building 
						particularly since
						
						
						there's only room for one row of people.'
						 
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						The Ledge is the world's most awesome view,
						
						
						
						the world's most precipitous view,
						
						
						
						the view with the most 'wow' in the world.
						
						
						
						The balconies are 10ft high and 10ft wide,
						
						
						
						can hold five tons,
						
						
						
						and have glass which is 1.5 inch thick. | 
									
									
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						Thrill seekers:
						
						
						The boxes jut out four feet from the building
						
						
						 and 
						were specifically designed to attract visitors. The 
						Willis Tower has always been about superlatives
						
						
						 - tallest, largest, most iconic.
						 
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						Inspiration came from the hundreds of forehead prints
						
						
						visitors left behind on The Skydeck windows every week.
						
						
						 Now, 
						staff have a new glass surface to clean:
						
						
						Floors!
						 
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						The Ledge is accessible from The Skydeck
						
						
						which attracts 25,000 visitors on clear days.
						
						
						They each pay $15 to take an elevator ride
						
						
						up to the 103rd floor of the 110-story office building 
						
						
						
						that opened in 1973.  | 
									
									
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