The plot borders the green belt, which extends between the Kent mountain ridge, the Blangy Hill and the parks of the Feber Parks. Thirty -one apartment buildings, each sixth floor, are the same in height and length, composed in a hexagonal shape that allowed eight open and waterproof courtyards. The design makes benefits from a large site and maximizes the presence of nature, forming vast gardens on the roofs, landscaped terraces above the sky. The movement of vehicles is minimized, which allows you to increase the green areas within this structure. Alternation includes the features of stability through a careful environmental analysis of the sun, wind, and the conditions of the microclimate on the site and the integration of low exposure passive energy strategies.