The is the CanopyStair. It’s a portable and removable spiral staircase that straps securely to the trunk of a tree. Robert McIntyre and Thor ter Kulve designed it after a visit to the Azores. They stayed in a house near the sea, but because of obstructions, they couldn’t see the sea until they climbed a tree. It occurred to them that there had to be an easier way to get to the top of a tree for recreational purposes. For their final project at the Royal College of Art, McIntyre and ter Kulve built an apparatus that will do precisely that.
The CanopyStair is made with an aluminum frame and held in place with ratchet straps. It takes about 3 hours for 2 people to assemble. Pads protect the tree bark from damage by the stairs. A railing makes it safer for people to climb the full 20 feet that the CanopyStair rises into the air.
-via Dornob
I went to the site expecting some super pretentious BS description. I was not disappointed.