I'm looking for a down-loadable, brief introduction to Chicago's famous buildings. The general 'loop' area is most practical for my brief visit, but the inclusion of other neighborhoods would be fine. This is for a self-guided tour, in effect.

Googling "architecture" produces lots of information but all the web sites I found want to you click around on specific buildings, when I'm looking for something more like a walking tour that puts them all together in brief compass. Googling "walking tour" produces tour companies and a few Amazon book ads.

For what it's worth, I had great success finding this kind of info for Tokyo recently. Thanks for any Chicago ideas!