Jeanne Gang designed Aqua with varying, wave-like concrete balconies, so the tower reads as rippling water from a distance. The shapes are not only sculpture: they are calculated to shade the glass. At 82 stories it was, on completion, the tallest building in the world designed by a woman-led firm.
Source: Studio Gang, Aqua Tower project documentation (completed 2009); Council on Tall Buildings and Urban Habitat, The Skyscraper Center, Aqua building profile