Parc Rothschild


Formerly owned by Baron Edmond de Rothschild, this park was given official classification in the 1950s, and over the last four decades it has been partially urbanised. It is now the object of disparate interests: private property, the Ambroise Paré hospital, associations, the city and the State. This complex economic context called for an all-embracing strategy of renovation; which is what Ilex came up with.

A remarkable location

Nestling in the meanders of the Seine, Parc Rothschild stretches out over 15 hectares within Greater Paris. In its heyday, it comprised a picturesque mosaic that included a waterfall, hills and a Japanese garden. But in the long run it was clear that renovation and conservation were going to be needed. Towards economic viability. When the park became public property, a new economic management system was required. The question, for Ilex, was to determine the maximum area that could, or should, be given over to development. There again, what was to be constructed? And how?

Re-engagement with the city

The garden has been turned into a real public space, with four new points of entry that have opened it up to its surroundings, including the city as a whole. And the « Allée des Deux Châteaux » was created as a link between the hospital and the château.

The preservation of identity

The situation was restored to that of the 19th-century. Paths, walkways and avenues were created, revealed or rehabilitated, and thereby made accessible to all.

Looking to the future

In order to integrate the park into a long-term perspective, Ilex put forward a strategy for the management of its plant life, which makes a major contribution to its character. We retain a close interest in this overall plan, and continue to be involved in it.


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Client: DREAL, Ville de Boulogne-Billancourt
Design: Ilex paysage urbanisme (team leader), Phytoconseil Environnement
Mission: assistance with the development of an overall plan for a classified site
Area: 30.7 hectares