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Tourists in glass balcony skydeck observation deck view Chicago skyline103rd floor of the Willis Tower Sears Tower Stock Photo - Alamy
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Visitors on the 412 meter-high observation deck, Skydeck, Willis tower, formerly Sears Tower, Chicago, Illinois Stock Photo - Alamy
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Pictures: Beautiful Photos from Around the World | Expedia | Skydeck chicago, Chicago pictures, Chicago travel
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