The Caisse des dépôts, a French organization specializing in urban planning and development, has proposed the creation of over 400 potential sites for building 1.6 million quality housing units. These units would be constructed in areas near city entrances, surrounded by trees and equipped with public facilities. The plan aims to improve living conditions while integrating nature and urban infrastructure. The proposal also includes the transformation of nearly 4,000 areas where large supermarkets, known as hypermarkets, have been established. These areas are increasingly being affected by urban expansion and could be repurposed for housing, community activities, and public or medical services. This approach seeks to make better use of existing spaces and reduce the need for new land development. By redeveloping warehouses and parking lots, the plan estimates that it would be possible to create green spaces covering 10,000 hectares. This area is roughly equivalent to the size of the city of Paris, highlighting the significant environmental impact of the proposal. The initiative focuses on sustainable urban development and the integration of green spaces into city planning. The Caisse des dépôts subsidiaries presented their second "Barometer of commercial city entrances" to the French Senate on September 30. This report outlines the potential of these areas and aims to inspire new approaches to urban planning and development. The organization hopes that this vision will encourage policy changes and investments that support the creation of more livable and sustainable urban environments.