A product of Eliasson’s decades of research into geometry, the complex asymmetry of this work invites viewers to move around and examine it from all angles, stimulating their active engagement. The work’s surfaces are panes of iridescent color-effect-filter glass, which reflect light of a single color while allowing the remaining light (which is of the complementary color) to pass through. Light shines out from the center to cast colorful fields of light and shadow on work’s surroundings, thus incorporating them into the work.