The project takes place on the site of the former marshes that surrounded the City of La Rochelle, where Louis XIII and Cardinal Richelieu carried out the terrible and famous siege of the city from 1627 to 1628. The site was subsequently filled in during the 20th century to build the city's administrative center.

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

A landscaped pond, teeming with fish and planted with reeds and aquatic plants, has been created in the center of the island. It collects rainwater and helps regulate extreme rainfall. A small island in the center provides nesting sites. Numerous nesting boxes have been placed on poles covered with fruit-bearing climbing plants. The pond's turquoise color comes from the local white clay used for waterproofing.

This space offers a calm and cool environment, complete with a terrace available to residents and their visitors. A stream oxygenates the water, promoting healthy fish populations in the pond.

To the east, the project enabled the restoration of the banks of the small Lafond river. This riparian forest is planted notably with rowan trees (Sorbus domestica), a native tree whose orange berries echo the facade of the building.

On the rooftops, a large accessible terrace is planted with strawberries, artichokes, and herbs such as rosemary and currants. A gardening table allows residents to practice urban agriculture. The shrubs in the planters are also native, such as Prunus spinosa and Crataegus monogyna, and are adapted to the strong sea winds that blow across these rooftops during storms.

The differentiated management of planted areas minimizes garden maintenance and integrates the project into the renaturalization 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.