Abstract: A single-part, watertight wall covering device for dynamically displaying changing images on a wall surface on which the wall covering device is attached, includes a panel-type main body made of a transparent plastic having a front side and a rear side. At least one image generation element with a matrix-type pixel assembly is arranged on the rear side of the main body in such a way that an image generated by the image generation element/s is visible through the main body for an observer of the wall surface.