Designed for a family, this conceptual house has as its architectural point the direct integration with the horizon and nature. Located in a closed condominium in a city in the interior of São Paulo, the premise was to turn all spaces towards the existing park in front of the condominium, a nature reserve, which served as an extension of the house, allowing the proximity to the outside. From the kitchen or bedrooms, on the ground floor or on the upper floor, the park is seen on the horizon, as if nature were inside the house. This was possible from its correct implantation on the land and with the large openings of the environments, always respecting the natural aspects, such as solar orientation, topography and the surroundings. The house was designed with sustainability in mind, based on a functional water collection, storage and reuse system, solar and photovoltaic panels, among other materials chosen for the construction. Technically, several constructive and structural details were used to allow the free structure and large spans, resulting in the integration of spaces and the fluidity of the “internal x external”. The house has an exclusive design of woodworking and furniture, full of furniture signed by great names of Brazilian Design. Everything allowed for a timeless, light, fluid and free result.