“Éternel” is a multi-functional residence for a designer and her family, conceived as a timeless “container of life.” Openness, flexibility, and accessibility allow it to evolve with each stage of living. Public areas are open and inclusive, while private spaces balance light and scale for calm. A refined palette of gray, stone, and wood veneer forms a pure backdrop, softened by personal details. Smart systems enhance daily ease, green materials and natural ventilation support health, and above all, the design nurtures lasting family bonds.