The project takes place at the level of the old marshes which surrounded the City of La Rochelle at the place where Louis XIII and the Cardinal de Richelieu carried out the terrible and famous siege of the city from 1627 to 1628. The site was subsequently backfilled in the 20th century to build the administrative city of the city.

The landscaping project, designed by Frédéric-Charles Aillet de Sempervirens, consisted of restoring the native wetland ecosystems that once took place on the site, in particular to accommodate migratory birds whose main route flies over La Rochelle.

A landscaped pond animated by fish is planted with reeds and aquatic plants was created in the center of the islet. It receives rainwater and helps regulate extreme rainfall. In the center, a small islet allows nesting. Many nesting boxes have been positioned on mats colonized by climbing fruit plants. The turquoise color of the basin comes from the local white clay which made it possible to achieve the waterproofing.

This space is a calm and cool place with a terrace available to residents and their visitors. A stream ensures the oxygenation of the water for better colonization of the basin by the fish.

To the east, the project has enabled the banks of the small Lafond river to be restored. This riparian forest (riverside forest) is planted with mountain ash, Sorbus domestica, a native tree whose orange berries are reminiscent of the facade of the building.

On the roofs a large accessible terrace is planted with strawberries, artichokes, condiment plants such as rosemary and other currants. A gardening table allows residents to practice urban agriculture. The shrubs of the bins are also native like the Prunus spinosa and the Crataegus monogyna, they are adapted to the gusts of sea winds which blow on these roofs on stormy days.

The differentiated management of the planted areas minimizes the maintenance of the garden and registers the project in the renaturation of the site.

A mixed program of 160 apartments managed by the Les Senioriales EHPAD group, with a range of services on the ground floor (multipurpose room, restaurant, offices) and social housing.