Advice from Chicago Folks?

[corilannam]

So my mother is leaving on Saturday for her cross-country journey on Amtrak. She changes trains in Chicago with a layover from about 9 a.m. - 2 p.m. on Sunday. She's looking for places to go and things to do that are near the Amtrak station (which I believe is right by the Sears Tower).

Anyone have any info or recommendations for shopping, sightseeing, or restaurants near Sears Tower that would be open on a Sunday? Any recommendations on places/areas she'd want to stay away from?

Halp!