Vertigo in a Box

There are a few things that make me feel completely uncomfortable. A few years ago I was reading an article about a glass floored observation deck that was to be built over the Grand Canyon. Just reading the article and thinking about walking on the glass platform made me uneasy. I guess I won't be visiting the Sears Tower...oops Willis Tower anytime soon.

From Izismile...

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.