This summer, Sears Tower will have a new face to match its new name. Although Chicagoans are less than thrilled about Willis Group Holdings moving in, the new view atop “Willis Tower” may render them speechless. Image: SOM Sears Tower’s observation floor will extend visitors beyond the curtain wall. Image: SOM Innovative glass boxes will provide gut-wrenching views from Chicago’s tallest tower. Just outside the glassed-enclosed, 103rd-floor skydeck, construction is under way to offer visitors a view of the city at all angles, including straight down, by means of four laminated, structural-glass modules that will extend more than 4 ft