A walk too far for me, 4000 ft from the floor

They have built a glass bridge above the Grand Canyon.
Click here.

Not all the way across but too much for me.
Website is a bit snazzy may need a download to run

http://www.grandcanyonskywalk.com/home.html

http://www.grandcanyonskywalk.com/construction.html

Tastefully blended in but still too much for some.