Walls. I want to see what happens when society's self-imposed barriers disappear. I know this takes with it buildings and homes and the remaining miniscule privacies associated with it. If you know that everyone can always see you, how would you behave? What would people become? Would we evolve or devolve? What would happen to our spirituality? How would the "elite" suddenly behave, now that they exist in exactly the same world?
I don't think this is thinking outside the box. I believe it to be removing the box entirely.