The Endless Staircase

(Photo: Dominik Hartmann)

Father and son mathematicians Lionel and Roger Penrose devised the Penrose triangle--an impossible object that looks like a twisting 3-dimensional triangle. They and M.C. Escher also conceived of a staircase based on that design.

This staircase isn't quite like it, but like the Penrose triangle and stairs, there's no beginning or end. Ólafur Elíasson, a Danish-Icelandic architect, designed it for the Munich offices of KPMG, an accounting company.

-via NotCot

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I took a walk to take a look at this piece of art... now there are 4 signs:
the first two: maximum 10 people, do not cause oscillations!
the second two: "Keep off!"
making these stairs even more futile...
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