Movie question: Set of 'What Women Want'

The family and I watched this mediocre Mel Gibson/Helen Hunt film last night on DVD.

Thankfully, I borrowed the DVD from the city library, so I can’t whine about how I paid $6 to Blockbuster to watch this dreck.

Anyway, the “action” in the film was so boring, I spent my time admiring the gorgeous sets of the Chicago ad agency where the Mel and Helen characters worked. Truly a stunning lobby, board rooms, meeting rooms and offices.

Anyone know if this movie was filmed at a real Chicago ad agency (or other building)? If so, can any Chicago Dopers tell me where this place is?

I couldn’t find an answer on IMDB, so that’s no help.

Thanks in advance if anyone knows.