We were challenged to design a tree house on a plain of pines and cork oaks. After visiting the site, a young and healthy pine was chosen, on a plateau overlooking the Atlantic Ocean. We assumed that the pine would serve as protection for the house and that the project would embrace the tree . Thus, it became natural to chose the material — from the structure to the covering, passing through its interior : pine . The project benefits of a view over the horizon during the day. At night, it favors a zenith view, since there are few other sources of light beyond that of the stars. In this way, the house suggests different experiences throughout the day and change of source of natural light.