1. A flame simulating assembly for providing an image of flames transmitted in a fluctuating light, having: (a) a simulated fuel bed, the simulated fuel bed defining a profile viewable by an observer; (b) a light source; (c) a screen disposed behind the simulated fuel bed for diffusing and transmitting light, the screen including a curved portion being curved in a vertical direction and in a horizontal direction to correspond to the profile of the simulated fuel bed; (d) the curved portion of the screen being positioned adjacent to the simulated fuel bed; and (e) a flicker element for creating the fluctuating light, the flicker element being positioned in a path of light from the light source, whereby the fluctuating light transmitted through the screen is attenuated and a three-dimensional image of flames appears to curve around the profile of the simulated fuel bed.