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Top 10 observatories in the world

Updated: 2014-05-26 07:28 (chinadaily.com.cn)
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3 Skydeck at Sears Tower, Chicago, Illinois, US

The glass balcony is suspended 1,353 feet (412 meters) in the air and juts out 4 feet (1.22 meters) from the Sears Tower's 103rd floor Skydeck. Visitors can see four US states on a clear day. The glass floor on the balcony is 12.7 cm thick and can bear a load of about five tons.

Top 10 observatories in the world

Anna Kane, 5, of Alton, Ill, looks down from "The Ledge," at the Sears Tower in Chicago, on June 24, 2009 .[Photo/dfic.cn]  

 

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