A large basically rectangular room with two oddities. The first being a back wall that slashes from a few feet behind the front right corner to the back left corner. The second being a floor that slopes gently from an elevated positon in the front, sloping back the same way as the wall to a lower position at the back. The room was created by Perceptual Psychologists in a an attempt to prove that they're better than everyone else by fooling people's perceptions and challenging their assumptions. In this example the Ames Room makes it impossible to determine the relative sizes of a two people, one standing in the front right corner, the other standing the back left. However an interesting exception is that husbands and wives seem to be able to adjust their eyes to see their spouse at their correct height, not at their distorted perceptions