Just as the linguistic sign, defined by Saussure, is like a double-sided coin: significant + meaning, so the city can be defined by this dichotomy, that is, on the one hand is
composed of matter and, second, to function or content. We travel the city as the
baudelairean flâneur as untimely affiliates walkers to the Situationist International, and
so we wear away the tread on the asphalt. Politics, associations and media are
responsible for our public space is constantly bombarded by private interests with the
consequent impact on the development of citizen relations in semi-privatized public
space. The Art brings significant strategies of non-urban places and does so through
the Public Art as artistic intervention appropriation of public space by the affirmation of ordinary citizens living there, i.e. by an art to the city and citizenship. Exploring the
current state of the contemporary city gives us the framework to review part of urban
artistic poetics emerged in recent decades.