FRAME captures Atmospheric Wave Wall, a work of public art by Olafur Eliasson conceived for Willies Tower in the heart of Chicago. His great experience with light, but also with geometry, and his sensibility for the territory are condensed into the wall activated by the motion of people, of the Earth in relation to the sun, and by climate changes. In the pattern of metal tiles (based on Penrose tiling) is recalled and revitalised all the energy of the lake Michigan that so strongly determines Chicago’s urban profile.