Chain by Andreas Aronsson
If you take a look at this design from Andreas Aronsson, you will see that each link of the chain is connected in a perpendicular manner in a way that could not physically be possible. According to Andreas:
I had this one sit in my notebook for, I think, more than six months. It took a few iterations just to get right on paper, and it took until I had a bigger span of time available for drawing to actually make it on the computer.
It certainly is an odd-looking chain.
To see more impossible figures created by Andreas Aronsson, be sure to check out Hoops and Impossible Stairs.
(via Andreas Aronsson)