Fußbodenornament in perspektivischer Verkürzung 

This drawing by Karl Ballenberger, housed at the Städel Museum, depicts a floor pattern. The artwork is characterized by its simplified geometric forms and muted color palette, showcasing a central octagon framed by alternating brown and cream squares. The blue accents at the corners of the octagon enhance the sense of depth and perspective. This design, likely intended for a decorative purpose, exemplifies Ballenberger's interest in the precision and order of geometric patterns.