Architectural glass art plays an increasingly important role in contemporary building design-- both interior and exterior-- and outstanding examples of this spectacular and versatile art form are making a significant impact on our surroundings. From the modern stained glass tradition established in the twentieth century by such key figures as Frank Lloyd Wright, Marc Chagall, and Henri Matisse, there has sprung an ever-changing art form showing an increasingly wide and experimental use of techniques and new materials. No longer confined to decorative windows, the almost endless possibilities are being exploited by architects and designers worldwide for a prominent public and private clientele.