Purunã Refuge is located in the Balsa Nova City at the foot of a geographical fault called Escarpa Denoviana. Its privileged view contemplates both the urban environment - cities of Campo Largo and Curitiba - as the nature of the Atlantic forest and the Serra do Mar. The refuge is protected to the west by native forest and opens to the east and north for a panoramic view of the Brazilian nature.

Free 3 meters from the ground, the refuge has as its main structure a 12 meters long container, and as secondary structures, two metal boxes lined with glazed planes and drywall. The larger glass box is occupied internally by the social area and the work area. The smaller glass box is intended for the kitchen of the housing. And it is in this kitchen that the interior space literally touches the foliage of the native forest. In the container space, in addition to the sleeping space, there is also the lobby and the bathroom equipped with a soaking bathtub.