The building is designed with an upside-down layout. Bedrooms are on the lower floor, set slightly below the level of the adjacent road, while split-level floors above contain living areas that make the most of available light and views. The building's sloping roof is intended as a continuation of the soil around it, and is planted with several species of flowering plants that change its appearance throughout the year. By contrast, the facades are sheathed in a rubber membrane that waterproofs the interior. This material also takes on a different tone, depending on the weather conditions.