#HTE
How to Make a Spiral Staircase More Dangerous: Allow It to Spin
Design students, look away. There is no application here.
At first I thought it was motorized, but now I think it’s free-spinning, and he’s just moving it with his feet and momentum.
What I really want to see, is him trying to walk down it.
No word on who designed/built this, or why, but plenty of discussion on it here.
https://www.core77.com/posts/109991/How-to-Make-a-Spiral-Staircase-More-Dangerous-Allow-It-to-Spin