Stained glass windows are decorative windows made from pieces of colored glass that are joined together by lead or copper framing. They are often found in churches, cathedrals, and other significant buildings, where they serve both artistic and functional purposes. The vibrant colors and intricate designs can tell stories or depict religious scenes, enhancing the atmosphere of the space. These windows are created using a technique that dates back to ancient times, with notable examples appearing in medieval Europe. The glass is often painted or treated to achieve different effects, allowing light to filter through in beautiful patterns. Stained glass remains a popular art form today, appreciated for its beauty and craftsmanship.