Modernity appears in Brazil, in Rio de Janeiro, through the hands of a small group of architects and transforms the city into the target of the most important Architecture Magazines worldwide. Europe and The US watch, both perplexed and surprised, a country commanded by an authoritarian government and marked by a conservative tradition adhere to such innovative proposals. Among those pioneers are The Roberto Brothers, three architects and brothers who, believing that modern architecture must have its projective and constructive methods within industrial process, they develop a diversified work structured, mainly, in the civil construction private market. From the 30´s to the 50´s, during the initial phase of the Modern Brazilian Architecture, The Robertos, based on the belief of the transforming power of the modern shape and using the freedom of shape and wise control upon all the components of their constructions, articulate a measure which opposes standardization, demanded by industrial procedures, to singularity - in an operation that seems to show the abyss between the social reality of the country and the modernity sought by the intellectual, political and economic elite at the