The body of work documents the environmental condition of one of Barcelona’s natural edges. The River Besós, together with the River Llobregat, is one of the two freshwater borders of Barcelona. Its landscape throughout the urbanisation of Barcelona has become an in-between-city: a blend of farmlands, industrialised infrastructures, and villages. Nowadays is one of the main water resource of the Catalan capital but its banks are heavily marked by the catalan industrial legacy. Over the last years it started slowing having a renaissance thanks to decontamination and reclamation plans that repopulated the fauna and let an healthier flora growing again. The nature is slowing getting repossession of its space.