Sunday's San Francisco Chronicle ran a travel article that describes Chicago as "the one American city where architecture lovers can indulge ourselves with abandon and never feel jaded." The text is fine, and even locals might find the the run-down of ten important structures useful for planning a leisurely Saturday afternoon. But, to tour without leaving your desk, there's a multimedia slideshow that, after taking in Millennium Park etc., peeks inside some of the buildings you may no longer notice as you rush to get to work on time.