The seven people sitting on the ledges of this building seem to be very confused.  Are they looking out of the windows or into the center of the building?  It looks like a tower or a cylinder, but if you investigate the construction you will find that it is anything but.

(via István Orosz)

Other Optical Illusions You Might Enjoy

A New Wall by István Orosz

18

Impossible Triangle on Fence

18

Impossible Construction

18

Minecraft Impossible Triangle

My kids have recently become obsessed with Minecraft (they play the Pocket Edition on the Amazon Kindle), especially my

18

Sad Tale by István Orosz

18

Impossible Stairway by Nagai Hideyuki

18