Located within a beautiful rural plot south-east of Lima, Peru, Casa Chontay by Marina Vella Arquitectos is an example of modern sustainable building. The residence blends with the landscape, mainly due to extensive use of natural materials, and exudes an optimum indoor-outdoor relationship. The two wings of the house are both encircled by vegetation, loosing their front-back perception. The living room, dinning room and kitchen are located in an area sheltered by a tall volume, large window screens assure natural light and cross ventilation. To ensure the bedroom’s good ventilation and lighting low windows are oriented towards the East and the “teatinas” (Peruvian roof windows used since colonial times) are oriented towards West.