Recent technological advances have radically altered the parameters of the urban field: trade takes place on a universal scale, work is immaterial and telematic, and new modes of communication influence the development of social relations. The city is the topographical area where these changes occur in their most concentrated form, where the conflicts and tensions accruing from them are most clearly articulated, where pixel and concrete are bound at every level. No longer a material place defined by geographical and architectural boundaries, the city of today is constituted by experiences, by lifestyles and attitudes, by leisure and consumption, by faces and conversations, and by media. Texts and projects by urban designers, artists, and writers, including Archined and V2_lab, Knowbotic Research, Scott Lash, Bart Lootsma, and Rafael Lozano-Hemmer, chart groundbreaking ways of thinking about the new city.