Korean artist Hong Sung-Do has some interesting works using mixed media and photographs. The following installation used plexiglas, aluminum and photographs to distort viewer’s perception of the images.

Tourist, 2006
© Hong Sung-Do
More of his works can be seen here.

Strange how such simple acts (such as the framing and slight alteration with in the photos above) can change our perception of the image so much. I spent minuets looking in confusion.
very strange work, very beautyful work!