Abstract: There is disclosed a decorative module which can be used to decorate the face of a building or can also be used as a support for a picture or a painting. The decorative module is made of a single sheet of material, such as aluminum, and comprises a rectangularly shaped concave face derived from an intermediate portion of the sheet of material. Rearwardly and inwardly angled borders are formed along two opposite sides of the concave face. The remaining portions of the sheet of material can be folded at the rear of the concave face while engaging into one another. The concave face forms an arc of a circle whose height is at least 1/25th the length of the chord of the arc of a circle. The module is constructed and arranged to be self-supporting.