What is the function of a cornice on a building?

A cornice serves primarily as a decorative architectural feature located at the top edge of a building. Its purpose extends beyond mere aesthetics; it helps to define the overall character and style of the structure. The cornice creates a visually striking transition between the roofline and the facade of the building, adding dimension and detail to the architectural design.

While functions like protecting from water damage or providing shade are important aspects of building design, they are not the primary roles of a cornice. Similarly, a cornice does not serve to hold up walls, as its structural role is minimal compared to other elements of the building such as beams and columns. Therefore, identifying the cornice mainly as a decorative component aligns correctly with its traditional purpose in architecture.