Chicago Spire would have further transformed the always-growing Chicago skyline. Plans for the tower included 1,193 condominiums with each of the building's 150 stories rotated 2.4 degrees from the one below it for a total 360 degree rotation. In February 2008, prices for the condominiums were announced as ranging from $750,000 to $40 million USD. For supplemental structural support, each floor was to be surrounded by cantilevered corners and four concave sides. Similar to the Willis Tower (formerly Sears Tower) and John Hancock Center observation decks, the Chicago Spire design included a community room on the top floor offering residents a view
Vista Tower (Chicago) Vista Tower (Chicago) Construction started in August 2016 with expected completion in 2020. Upon completion, it will become the city's third-tallest building at . Designed by a team led by architect Jeanne Gang, Vista will supplant the nearby Aqua skyscraper (also designed by a team led by Jean Gang) as the tallest structure in the world designed by a woman. This will make Chicago home to the two tallest structures designed by a woman. Vista Tower is a joint project of Magellan Development Group and Wanda Group. The original estimated cost of construction was $900 million. The building will have