Major construction projects , including the Sears Tower ( now known as the Willis Tower , which in 1974 became the world 's tallest building ) , University of Illinois at Chicago , McCormick Place , and O'Hare International Airport , were undertaken during Richard J. Daley 's tenure .
Richard J. Daley helped create the construction sites for the Willis Tower , O'Hare International Airport , the McCormick Place , and the University of Illinois at Chicago .