Since the beginning of his artistic career James Turrell has been dedicated to the various manifestations that light can take. His work fascinates people around the globe from all social classes. Light is considered to be the medium that makes the world visible to us. However, with his large-scale installations, James Turrell makes us experience light as physical matter, as solid figure and volume, thus raising questions regarding our perception. The artist therefore repeatedly stresses that his unique art is best termed «Perceptual Art».