Via NPR's Krulwich Wonders Blog:
You are standing in a park in New Zealand. You look up at the top of a hill, and there, balanced on the ground, looking like it might catch a breeze and blow away, is a gigantic, rumpled piece of paper.
Except ... one side of it, the underside, is ... not there. You can see the sky, clouds, birds where there should be paper, so what is this?
...as you can see from these two-dimensional photographs of the three-dimensional sculpture that looks like a two-dimensional cartoon sitting on a three-dimensional hill — STOP!!! My head hurts.......MORE