Photograph by Philipp Klinger
This Amazing sculpture was designed by Olafur Eliasson. It’s a 9-meter high double spiral staircase made of steel located at the entrance of the KPMG office building in Munich, Germany. The stair is called Umschreibung (Rewriting), and was completed in 2004.
In my opinion it's a very amazing sport device, it's a real sport actions in which we activate and build our Muscles.
via Philipp Klinger on Flickr