Aqua is an 82-storey Chicago skyscraper designed by Jeanne Gang and known for its rippling concrete balconies. The wave-like profile changes as you move around the tower, making it one of the more distinctive modern buildings near Millennium Park and Lakeshore East.
It is mainly an exterior architecture stop. The best views are from the surrounding streets and nearby park areas, where the balconies' irregular curves are easiest to see.