Stained glass is a decorative art form that involves creating images or patterns using colored glass pieces. These pieces are often held together by lead came or copper foil, allowing light to pass through and create vibrant displays of color. Stained glass is commonly used in windows, doors, and lamps, enhancing both the aesthetic and spiritual atmosphere of spaces like churches and cathedrals, such as Notre-Dame Cathedral. The process of making stained glass includes cutting, shaping, and painting the glass. Artisans, known as glaziers, often use techniques like glass blowing and fusing to achieve different effects. Stained glass has a rich history, dating back to the Middle Ages, and continues to be a popular medium for artists today.