Release Message:  A trapezium (trapezoid) and the tallest end always appears nearest. Discovered by Adelbert Ames, Jr.

Description:  An image on, for example, a flat piece of cardboard, in the perceived shape of a style of window. When observed it appears to the human eye as a rectangular window but is, in fact, a trapezoid. A window is formed in the shape of a trapezium. It is often hung and spun around to provide the illusion that the window rotates through less than 180 degrees.