Start with Jane Jacobs (google her, quite famous), then read her "The Death and Life of Great American Cities". It's helps you understand why cities work, why they don't, what makes a neighbourhood, what destroys them and how almost everything city planners and governments think matters, actually doesn't.

After that, read the Malcolm Gladwell article how her findings can be applied to office culture. http://www.gladwell.com/2000/2000_12_11_a_working.html

After all that, apply all that to offices you've seen.