http://io9.gizmodo.com/5619183/could-self-aware-cities-be-the-first-forms-of-artificial-intelligence
the obvious concerns about technocratic utopianism aside what is vital to note is all the yet to be invented infrastructures that would have to be in place for a city to be anything like a system/organism let alone a conscious one.
see also https://deterritorialinvestigations.wordpress.com/2016/08/19/smart-city-instrumental-rationality-in-the-21st-c/ and http://www.glass-bead.org/article/forging-rules-glass-bead-in-conversation-with-keller-easterling-and-benedict-singleton/?lang=enview