Windows of the World
Stained glass requires artistic skill to conceive a workable design and the engineering skills to assemble it. A window must fit snugly, resist the elements and support its own weight. Many large windows have remained intact since the Late Middle Ages. In Western Europe they constitute a major form of pictorial art. The purpose of a stained glass window is not to allow those within a building to see the world outside or to admit light, but rather to control it.