 In the late 1980s and early 1990s, the then owner, JMB Corp. of Chicago, had several plans to expand and enclose the outdoor mall.These plans included adding a second level and possibly a fifth department store at the end of the southeastern wing of the mall.These plans coincided with Chicago's Lake Calumet Airport which would have been just a few miles north of the mall and would have transformed the area around the mall into an office and business hub.