organic ornament

Organic ornament in architecture is a concept where decorative elements are inherent to the building's function or materials, rather than being applied extrinsically. This principle emphasizes that ornament should directly derive from and be a function of the building's nature and the materials used.123

This idea contrasts with mimetic ornament, which imitates familiar forms with symbolic meaning, and applied ornament, which is added for beauty but is separate from the structure. While the concept of organic ornament gained prominence in the early 20th century, its essence can be seen in medieval Christian and Islamic architecture, where decoration contributed to an overall effect of glory and symbolism, making it integral to the architectural form. Architects like H.H. Richardson and Louis Sullivan explored this principle by allowing the inherent qualities and textures of materials to provide aesthetic effect.123