Mental Floss has a great article that uncovers some of the hidden design decisions made that influence the users of an airport. It is a fascinating look at how subtle designs can have consistent effects on how we all interact with a building.
My initial reaction to this article made me feel used and cheated, as many of the designs are aimed at increasing revenue. But then I thought, every design is creating to do something...to affect us in some way, whether physical or emotional. Design is always intended to affect the person experiencing it, whether the designer realizes it or not is another story.