A ceiling is the upper interior surface of a room, typically found above the walls. It serves both functional and aesthetic purposes, providing insulation and hiding structural elements like beams and wiring. Ceilings can be made from various materials, including drywall, plaster, and tiles, and can be painted or decorated to enhance a room's appearance. In architecture, different styles of ceilings exist, such as vaulted, coffered, and tray ceilings. Each style offers unique visual effects and can influence the overall ambiance of a space. Ceilings also play a role in acoustics, affecting how sound travels within a room.