Grand Canyon Skywalk
The Grand Canyon Skywalk is an architechtural marvel. It was completed on March 28, 2007 after 2.5 years of hard work and engineering. The structure itself weighs an astinishing 1.571 million pounds, and was built to withstand an excess of 71 million pounds in weight on top of it.
Sent by Cheyenne from Oklahoma, USA.
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