An improved three-dimensional sign includes three light boxes each having a light box housing, a light or lights, a light diffuser, and a bezel configured to releasably secure a graphical image in contact with the respective diffuser. Each of the three bight box housings and the respective diffusers are formed with respective selectively-shaped peripheries. The first, second, and third light boxes are selectively positioned with respect to each other within a fixture housing that provides a dark background tot the backlit graphics, for the three selectively shaped peripheries and graphics to create a particular inverse cube illusion. The structural arrangement also provides the illusion that the statically displayed advertise lent graphic(s) is/are directed towards and follows the consumer as he/she approaches and then walks past the sign. The dark environment is provided by a housing of sufficient depth, having a dark surface that is preferably black.