German artist Tobias Rehberger's work is all about illusion. His installations transform rooms into Op Art-inspired, immersive environments that trick the eye. Criss-crossing, black and white patterns flatten the three-dimensional spaces, confusing his viewers' sense of depth with busy patterns that continue from floor to ceiling. Rehberger's sculptures are similarly entrancing with their bright colors and geometric forms. Though abstract at a first glance, many of his works cast shadows that form textual messages, adding another dimension of experience to the pieces.