what makes a great city?

Nice perspective from cyclist and Talking Heads founding member David Byrne, particularly about how our physical environments can change the way we communicate with each other:
"It's human nature for us to look at one another— we're social animals after all. But when the urban situation causes the distance between us to increase and our interactions to be less frequent we have to use novel means to attract attention: big hair, skimpy clothes and plastic surgery."
In your ideal place, how would you like to interact with your fellow citizens and with nature?