Stained glass is a decorative art form that involves creating images or patterns using colored glass pieces. These pieces are often held together by strips of lead or copper foil, allowing light to pass through and create vibrant displays of color. Stained glass is commonly used in windows, particularly in churches and cathedrals, where it can depict religious scenes or symbols. The process of making stained glass involves cutting glass into specific shapes, painting details with special glass paints, and then firing the pieces in a kiln to set the paint. This technique has been used for centuries, with notable examples found in Gothic architecture and Renaissance art.