James Turrell (1943, Los Angeles), one of the most important artists of our time, has been exploring the (im)materiality and perception of light for over 50 years. Like no other, Turrell manages to make light an experience that is both sensual and intellectual. He himself describes his art as "Perceptual Art," an art of perception. In large-scale, atmospheric installations, the artist floods walk-in spaces with light, which pours into gentle seas of color or intensely glowing light mists, pushing the viewer to the limits of their perception. The book provides a comprehensive insight into the work of James Turrell and brings together pieces from various phases of his career since the 1960s.