Now doesn’t this chair look comfortable? Optical Illusions on perspective. This was a piece in a museum in Germany called Documenta X. The chair is said to look perfectly fine and inviting upon entering the room, however, as the viewer walks closer to it, the true nature of the chair is revealed.
Sue Webster and Tim Nobel use sculpture of what appears to be junk to create shadow art. The above image is by far my favorite of the pictures i saw on the site link below.