The Architecture of Sun and Shadow | A Striking Triangular House in Brazil
A House Defined by Sun, Geometry and Brazilian Materiality
Located in Maringá, Paraná, within the Ecogarden residential community, this 617.51-square-meter residence was completed in 2025 with architecture and interiors by Andrade Oliveira Arquitetura Brasileira, led by architect Marcos Oliveira. The project reflects the studio’s pursuit of timeless Brazilian architecture, combining pure geometry with a strong response to climate, site and local material culture.
The house is organized around a remarkably clear geometric idea: the triangle. Its form reappears at different scales throughout the project, from the overall architecture to the swimming pool and the cobogó, whose triangular openings cast shifting patterns of light and shadow across the water. Rather than functioning as a purely formal gesture, this geometry emerges from the specific conditions of the site and gradually becomes the architectural identity of the house.
The program is distributed across two levels. Five suites and a more intimate living area occupy the upper floor, while the social spaces, service areas, garage and swimming pool are positioned below. This organization generates a strongly horizontal upper volume that extends beyond the ground floor, creating generous cantilevers that protect the social areas from the intense Paraná sun.
Light and climate become fundamental architectural elements. A skylight and a tall internal atrium bring morning sunlight deep into the house and illuminate a green curtain at the rear of the site, while brise soleils filter the stronger afternoon sun without interrupting natural ventilation. As daylight moves throughout the day, shadows continuously redraw the architecture, giving an otherwise rigorous geometry an evolving character.
Materiality introduces warmth into this precise composition. Tauari and cumaru, Brazilian woods with Indigenous names, appear across vertical panels and ceilings, softening the purity of the volumes and connecting the residence to Brazilian building traditions. Local suppliers, natural stone and a carefully curated selection of furniture reinforce an approach in which architecture, interiors and material culture are conceived as parts of the same experience.
In this film, we take a poetic and cinematic journey through the house, following its geometry, cantilevers, filtered light, Brazilian woods, moving shadows and relationship with the sun. Rather than simply documenting its spaces, the film reveals how architecture changes throughout the day, allowing structure, materiality, climate and landscape to unfold naturally through movement and light.