In this set of snapshots, we see the mall's four seasonally-themed concourses. In this view is the Spring Mall. The shopping center had no skylights, so there was no natural lighting. Live plants would not survive, so planters were filled with artificial flora and fauna whose color palettes matched the theme of the respective wing.
Photo from Malls of America Blogspot

Moving eastward, we have the Summer Mall. Note the "TV Pod" in the center of the corridor. This futuristic feature (one of many such terminals throughout the facility) broadcast commercials and programming created in a tv station studio on the Lower Mall.
Photo from Malls of America Blogspot