The capital is continuing its greening objective with the installation of a new urban forest on the forecourt of the City Hall. The first trees were planted in mid-January, marking a key stage in this project designed to refresh and beautify the public space.
An ambitious transformation
Following the successful projects of Place de Catalogne and Bois de Charonne, this third urban forest will extend over 2 m², including 500 m² of open ground. In total, 1 large trees, representing various local and exotic species, will make up this space, including oaks, hornbeams, hackberries and maples. The wooded groves will be accompanied by 000 plants, including shrubs and ferns, to recreate a forest atmosphere in the heart of Paris.
Climate and aesthetic objectives
This project aims to respond to the challenges of global warming by creating a cool island capable of locally reducing the temperature by 4°C during the summer. In addition to its climatic benefits, this greening is part of the desire to strengthen urban biodiversity and offer a pleasant setting to Parisians and visitors.
"The need to green our cities is vital today, and every square meter counts," stressed Christophe Najdovski, deputy mayor of Paris responsible for greening.
A harmonious integration
To preserve the historic character of the site, the developments respect the emblematic perspectives of the square. The view of Notre-Dame and the surrounding buildings will remain clear, while the fountains of the forecourt will be integrated into the landscape, surrounded by vegetation.
Despite these transformations, the center of the forecourt will remain accessible to host major events, such as the Fête de la Musique or Paris Plages.
Technical challenges
The presence of an underground car park imposed constraints in the design. The trees are planted in specially designed pits with a suitable substrate to ensure their growth. In addition, an optimized watering system will guarantee their long-term health.
Calendar and outlook
The work is scheduled to be completed in June 2025. This project is part of a long-term policy, with the objective of resurfacing 60 hectares by 2026 and 300 hectares by 2040.
This new urban forest, a true symbol of Paris' ecological transition, will offer an oasis of greenery and a space for relaxation in the city center, reinforcing Paris' role as a pioneering city in urban sustainability.
