I'm missed some tallest skyscraper have been cancelled in Chicago

7 South Dearborn 7 South Dearborn Street Chicago IL United States Status: cancelled Construction Dates Finished: 2004 Floor Count: 112 Building Uses • mixed use • communication • hotel • office • residential Structural Types • highrise • cantilever • cross brace • pole Heights Value Source / Comments Antenna 609.6 m European-American Realty All heights here provided by European-American Realty, the project developer. Roof 472.4 m Top floor 467.0 m (except this one) Tuned mass dampers 440.1 m Floor 109 Communications 376.8 m Floors 96-108 Core only (3) 369.7 m Floor 95 Mechanical (3) 355.4 m Floors 93-94 Residential (2) 290.8 m Floors 73-92 Core only (2) 283.8 m Floor 72 Residential (1) 212.1 m Floors 52-71 Core only (1) 204.8 m Floor 51 Mechanical (2) 188.1 m Floors 47-50 Offices (3) 137.8 m Floors 36-47 Offices (2) 75.0 m Floors 20-35 Offices (1) 54.3 m Floors 15-19 Mechanical (1) 45.7 m Floors 13-14 Parking 12.2 m Floors 2-12 Ground level 0.0 m [IMG]htt p://skyscraperpage.com/gallery/data/554/28chicago-7southdearborn3.jpg[/IMG] Chicago World Trade Center Chicago IL United States Status: cancelled Construction Dates Finished: 1982 Floor Count: 210 Building Uses • office Structural Types • highrise Heights Value Source / Comments Roof 762.0 m Description Designed by Harry Weese for developer Stanley Raskow. Miglin-Beitler Skyneedle 201 West Madison Street Chicago IL United States Status: cancelled Construction Dates Finished: 1989 Floor Count: 125 Building Uses • office Structural Types • highrise • concrete core • Vierendeel truss Architectural Style • postmodern Materials • concrete (reinforced) • glass • steel Heights Value Source / Comments Spire 609.3 m Description This tower was intended to be as tall as the FAA height restrictions permitted - 2000'. It would not only have been the tallest in the world, but one of the most slender as well utilizing a basic 140' x 140' footprint with 8 projecting "fin" columns. It was these columns which would give the tower it's ability to resist lateral forces with a minimal of deflection. They were to be made of High Strength concrete with varying dimensions of 6'-6" x 33'-0" at the base to 4'-6" x 13'-0" in the upper levels. The central core (62'-6" square) would house elevators and other services permitting efficient use of the cruciform floor plates. The 125 story project would feature a public observation area at 1,486' and a 600' steel framed spire and communications tower comprised from 12 steel perimeter columns. Everything is cool so I hate to see have cancelled on this project.>