An architrave is a horizontal beam that sits on top of columns or pillars in classical architecture. It serves as a structural element that supports the weight of the building above it, while also providing a decorative finish. Architraves are often found in structures influenced by ancient Greek and Roman designs. In addition to their structural role, architraves are commonly used in modern interior design as trim around doors and windows. They enhance the aesthetic appeal of a room by framing openings and can be made from various materials, including wood, plaster, or metal, to match different styles and themes.