The construction is a monolithic piece of concrete dyed green with a water repellent coat made of Copper Oxide. The openings, distributed according to orientation and programmatic needs, establish varying densities in the wall that wraps this silhouette. This wall is technically composed of two independent reinforced concrete walls (one of them structural) with an insulation layer in between. The fabrication of this wall was done in situ with the simultaneous pouring of concrete into both walls. The owners of the house, equally involved in contemporary art, once showed us the rusted and aged pedestals of the monuments found in local squares. The oxide drippings, we thought, print the surfaces with an elusive natural quality, halfway between mineral and vegetal.