This work is part of the study of health heritage in Pará and aims to analyze aesthetic-functional elements of the former Barros Barreto Sanatorium (now João de Barros Barreto University Hospital). This hospital was produced in a period in which tuberculosis caused high mortality rates in the country in which the modern architecture was the right pattern. Through bibliographic and documentary researches, the architectural elements of the old sanatorium are qualitatively approached, making a parallel with elements present in modern health architecture in Brazil, as well as the strategy of building the sanatorium far from the urban center, located in the Guamá neighborhood. Furthermore, this analysis of elements shows that they followed functional principles, moving away from the concern with aesthetics and currently, due to the needs present in the Hospital, it is noticeable in the lack of care in maintaining original uses of the building environments and in forgetting the old park of eucalyptus.