What are acroteria in architectural terms?

Acroteria are architectural elements that are primarily decorative shapes mounted on the apex or corners of a pediment, which is the triangular upper part of a building's facade. These ornamental features often take the form of sculptures, vases, or other embellishments, enhancing the visual appeal of the structure. In classical architecture, acroteria were commonly used to accentuate the grandeur of the building and signify its importance. The presence of acroteria can add layers of detail and express specific design themes, aligning with the overall aesthetic intended by the architect. This role in decoration distinctly differentiates them from other components like roofing materials, foundational elements, or structural supports.