Cities structure our lives, resources, interactions, and identities. From Sebastiano Serlio to Rem Koolhaas, architects have used the metaphor of theater, presenting the city as stage, as comic sets for comic acts, as a delirious city for delirious subjects, generic city for generic subjects, and so on. Today, however, we are social anywhere, actors on- and offstage. So what happens when the city no longer structures us, or when basic urban elements ? streets, buildings, facades, and addresses ? have been augmented, superimposed, and untethered by or replaced through technology?