Sketch for the ceiling , by theo van doesburg , 1923 , design , Neoplasticism style , floor and ceiling, architectural drawings
A drawing of a building made out of brown paper.
A drawing of a diamond shaped object is on a white background. The diamond is brown and has a square pattern on it. The pattern is made up of small squares of different sizes. The squares are white and blue. There are three windows on top of the diamond. There is a letter "I" on the left side of the image.