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
Chase Tower (Chicago) live audience at the Chase Auditorium under the plaza. Design architects for the construction were C.F. Murphy Associates, Stanislaw Z. Gladych and Perkins and Will. Chase Tower is known for both its distinctive curving shape and its vibrant public space: a deep sunken plaza at the geographic center of the Chicago Loop, complete with a jet fountain and Marc Chagall's ceramic wall mural "Four Seasons". The ground floor is home to the largest Chase Bank branch in Chicago with 22 ATMs. Chase Tower (Chicago) Chase Tower, located in the Chicago Loop area of Chicago, in the U.S. state of Illinois