![Chicago skyline featuring the Willis tower formally the Sears Tower one of Chicago's iconic historical buildings Stock Photo - Alamy Chicago skyline featuring the Willis tower formally the Sears Tower one of Chicago's iconic historical buildings Stock Photo - Alamy](https://c8.alamy.com/comp/2BP5MW7/chicago-skyline-featuring-the-willis-tower-formally-the-sears-tower-one-of-chicagos-iconic-historical-buildings-2BP5MW7.jpg)
Chicago skyline featuring the Willis tower formally the Sears Tower one of Chicago's iconic historical buildings Stock Photo - Alamy
![Skyline view of Chicago, Illinois, dominated by Willis Tower, long known as Sears Tower - digital file from original | Library of Congress Skyline view of Chicago, Illinois, dominated by Willis Tower, long known as Sears Tower - digital file from original | Library of Congress](http://tile.loc.gov/image-services/iiif/service:pnp:highsm:18000:18038/full/pct:25/0/default.jpg)
Skyline view of Chicago, Illinois, dominated by Willis Tower, long known as Sears Tower - digital file from original | Library of Congress
![Aerial view of skyline, with a focus on Willis Tower, long known as Sears Tower, Chicago, Illinois - digital file from original | Library of Congress Aerial view of skyline, with a focus on Willis Tower, long known as Sears Tower, Chicago, Illinois - digital file from original | Library of Congress](http://tile.loc.gov/image-services/iiif/service:pnp:highsm:14100:14122/full/pct:25/0/default.jpg)