A ceiling is the upper interior surface of a room, serving as a boundary between the room and the space above it. Ceilings can be flat or have various designs, such as vaulted or coffered, adding character to a space. They often hold light fixtures, like chandeliers or ceiling fans, which help illuminate the room and provide comfort. In addition to their aesthetic role, ceilings also play a practical part in insulation and soundproofing. Materials like drywall or plaster are commonly used for ceilings, while decorative options may include paint, wallpaper, or tiles. Overall, ceilings contribute significantly to the atmosphere and functionality of a room.