ARCH is a type of architectural structure that consists of a curved shape, typically made of stone, brick, or concrete. It is designed to support weight and distribute forces, allowing for the construction of doorways, bridges, and other openings. The design of an arch helps to create stability and strength, making it a fundamental element in many buildings and structures. The concept of the arch dates back to ancient civilizations, such as the Romans, who used it extensively in their architecture. The Roman arch is a well-known example, showcasing the engineering prowess of the time. Today, arches continue to be used in modern architecture, blending aesthetics with functionality.