

The owners of Sears Tower in Chicago have installed a glass box viewing platforms which stick out of the building 103 floors up. The glass balcony is suspended 1,353 feet in the air and jut out four feet from the building's skydeck.The boxes jut out four feet from the building and were specifically designed to make visitors feel as if they are floating.



The Skydeck 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. The balconies are 10ft high and 10ft wide, can hold five tons, and have glass which is 1.5 inch thick. Architect Ross Wimer said: 'We did studies that showed a four-foot-deep (1.2 metres) enclosure makes you feel like you're floating since there's only room for one row of people, not two.'



John Huston, one of owners of Sears Towers said, "Look at all those tiny things that are usually huge.I Felt little queasy the first time i ventured out on to the balcony. However, after 30 or 40 trips, i got used to it. The Ledge is the world's most awesome view, the world's most precipitous view, the view with the most wow in the world."



















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