Chicago, Illinois, U.S.A

The Windy City has been the Midwest’s center of transportation, industry, finance, and entertainment since it was founded in the 1830s on the shore of Lake Michigan. More than 9.5 million people now live in the metro area, making it the third-most-populous city in the U.S. In the coming years, the city could experience a gradual yet dramatic increase in heat waves and flooding.

Balcony at Sears Tower

The balconies of the Sears Tower in Chicago - not for people who have vertigo!

The owners of the Sears Tower , the tallest skyscraper in the United States ( Chicago ), inaugurated last week four glass box viewing platforms. These balconies are suspended 1,353 feet (412 meters) in the air on the 103rd floor. They are 10ft high and 10ft wide and can hold 5 tons with their 1.5 inch thick glasses.
Really impressive and definitively something to try...