Taihang Mountain Spiral Staircase. There better be a cold beer at the top of that flight.
Someone more talented than I should animate it.
[Found in here and here.]
[Found here, here and here. And, yeah, there’s another great addition to our “Dance Hard” Archive.]
This either explains a lot, or it doesn’t.
[Found here. Related posts here and here. If it still doesn’t make sense to you, click here.]