This transformation will unfold over a logical, four-phase process spanning 20 years. 

The first phase (0-5 years) will focus on immediate activation through temporary uses, allowing the public to reclaim the space while initial renovations and targeted decontamination commence. 

The second phase (5-10 years) involves the main deconstruction and decontamination effort, the construction of the new workers’ city, and the creation of the underground parking. 

In the third phase (10-15 years), we will build the «Magasins Généraux» and «Ateliers du Lac» using salvaged materials and develop the primary landscape connections. 

The final phase (15-20 years) will complete the vision with the renovation of the «Grande Usine» for major economic players and the construction of the «Coopérative» building, cementing the site’s new identity.

The architectural expression will celebrate the industrial character of the site. Reuse is our guiding principle. Steel structures from demolished halls will form the skeletons of new buildings. The facades will feature a mix of salvaged and new bricks, while recovered wood and stone will also find new life. New roof designs will pay homage to the iconic industrial sheds, bathing interiors in natural light and preserving the site’s unique atmosphere.

Ultimately, this project offers a rational, contextual, and responsible urban strategy. It is a remediation that reactivates the essential spirit of the site, transforming a polluted brownfield into a symbol of renewal; a vibrant, integrated and productive district that benefits the city of Mantes-la-Jolie and its inhabitants.

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