The Chicago Spire is a supertall skyscraper under construction in Chicago, Illinois.
The skyscraper will stand taller than Chicago's Sears Tower and New York's upcoming Freedom Tower,
As well as Toronto's CN Tower, thereby becoming
North America's tallest free-standing structure and the world's tallest all-residential building.
The building was designed by Spanish architect Santiago Calatrava.
The Chicago Spire is scheduled to be completed in 2011 with 150 floors.
Would love to see something like this in Singapore.