Construction work is complete on the 82-storey Aqua skyscraper in Chicago, US.
The tower won the Emporis Skyscraper Award last year for its unique shape and construction, as well as its green design innovations.
Apartments, retail space and hotel rooms are all housed in the 874ft² mixed-use complex.
The tower's balconies feature undulating waves of concrete, which provide shade and respite from the sun, thereby reducing energy.
Animal rights group PETA has already given an award to the building for its exterior because it deters birds from hitting the skyscraper.
The tower is housed on an eight-storey pedestal base, which will provide public spaces for a planned hotel and an 80,000ft² terrace with gardens, pools, running track and fire pit.
The first 18 floors will house the hotel while apartments will occupy floors 19 to 28, and condominiums from floors 29 to 82.
James McHugh Construction served as the general contractor, Loewenberg Architects worked as the architect of record while Studio Gang Architects worked on the design architecture, according to design-training.com.