a Paz a major city of Bolivia, is settled on a highly dense hydrological system as part of a complex sequence of valleys and hills, in which the riverbanks are the ground to develop urbanization. 

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River valleys consequently present a contradictory image: when plain and open they become the central spaces of the city once the rivers are covered; and when steep and narrow they become neglected dumping areas where the rivers remain open.   

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The project imagines how these backside valleys can become potential open areas by valorizing the natural performance of a blue and green system. As urbanization has consumed most of the areas in the city, open space that preserves a natural vocation becomes the most evident challenge for the city. The project assumes an integration of Landscape and Architecture as these backside valleys have the opportunity to contain a mixity of public and private programs that the city is not able to afford on its regular base of development.