The dissertation CEP 20.000 - Center of Poetic Experimentation - A Spoken Utopia covers the 30 years history of CEP 20.000, one of the most important and influential poetry events in Rio de Janeiro. Built on a journalistic, documentary, historiographic perspective, the dissertation also has a testimonial essence - given the author took part of it as cast and crew for over a decade. An open stage to all styles of artistic expression - with deeper focus on spoken poetry - CEP 20.000 has received tens of thousands of artists for short performances in front of an avid audience of around 200 people since 1990. This work seeks to positioning CEP 20.000, based on Michel Foucault s premisses, as an heterotopia, who deserves its place in a kind of dot line or historical rhizome of counterculture through history - from Cabaret Voltaire, the Beat generation, hippies, the marginal generation in Brazil, to punk and beyond. The trajectory of CEP is revisited from within Espaço Cultural Sergio Porto theater, its main venue, but also through the work and life of all the people connected to the event - transcending the boundaries of its own three decade existence and the limits of its stage to find its place as part of Rio s counterculture history, literary and musical scene, since the 1990 s till today.