A ["Skywalk"](http://www.grandcanyonskywalk.com/) has been built at the [Grand Canyon](http://en.wikipedia.org/wiki/Grand_Canyon) in America, the [BBC reports](http://news.bbc.co.uk/2/hi/americas/6469941.stm). The structure reaches 20m over the rim of the Grand Canyon – and is built [1219m above the canyon's floor](http://newsvote.bbc.co.uk/2/hi/americas/6469941.stm#map).