France today has 73 million inhabitants. Its population is always more urban and older. The mass exodus to the cities of the south and west forced the Provencal metropolis to react. The average temperature in the city center is 27 ° C with peaks of up to 55 ° C in summer. All attempts to gradually transform lifestyles have failed. In 2030, Marseille decided to ban all private transport vehicles in the city and relegated them to the silo towers of the transport hubs. The train acceleration project to Nice has enabled a complete overhaul of mobility in the metropolis. While small streets easily adapt to this new system, large infrastructures seek a new urban function.


At the same time, the city was attacked by urban densification operations that stifled it. Large wastelands and hollow teeth have been exploited at maximum. Even the equipment is now mostly private, and the city is forced to rent their farm. Public soil, there remains only this obsolete road network and some parks. The city makes in 2035 this weak reserve inalienable land.


The fertile soil is now extremely expensive. As soon as possible, we develop projects related to their use, observation and awareness, as in this pine forest that grew on the site of the Muy barracks. The city has set up a de-concreteization strategy. For each new operation, a coefficient of increase of biodiversity is imposed. The various activities must make it possible to create a given quantity of organic matter and produce oxygen. The inhabited nurseries are born, and augmented forests grow between the buildings to allow the inhabitants to breathe ... The city is a refuge for nature. Every drop of rain is collected or infiltrated on site.


Public land no longer has land value since it can not be sold. Promoters are losing interest in real estate products to make way for cooperative housing operations, where city and architects support citizen initiatives centralized on the "Habitat" platform.



The inhabitants of the Belle de Mai district no longer want to choose between substandard housing and new low-quality programs: they have begun to take over neglected infrastructures. The city offers them to build a joint project along the Plombières Viaduct. During design workshops, two major trends emerge: recreating new neighborhood structures, and thinking of spaces where life, work and relaxation are interwoven and evolve easily. 5 years later, life is in full swing on the Plombières viaduct ... Immersion.


It is 8:00. The ultra mobile are leaving the new solar eco - infrastructure hub. Some go on the first train to Rome, others take off in an autonomous balloon to Aix-en-Provence.


At lunch time, big party neighbors at the local ultras. Everyone enjoys a basil cactus juice, freshly picked and pressed on the green roofs of their bioclimatic dwellings. The festivities continue throughout the afternoon, with a petanque tournament, a tapenade contest and an introduction to the palm tree transplant.


At the Dominique Tramoni square, we are still active at 4 pm in the panoramic coworkings and (re) production workshops of biodiversity. On the viaduct, the first scenes of the festival of music and ecology Climax 2040 are installed. The Daft Punk will open the evening for the launch of their new album "Ecotechnologik".


At 8:00 pm, the first spectators head for the main stage. Some, tired after a day of training permaculture, prefer to regain quietly their penates.


The construction of superstructure dwellings on the Plombières viaduct has freed the soil to allow nature to regain its rights. Now, we live inside urban ecosystems where the temperature is reduced by 5 ° C and where we can breathe again without difficulty. The implementation of the housing system makes it possible to imbricate singular living cells and adapted to the needs of each one, from the house on 4 levels to the bedroom through the winter garden accommodation and the shared room-workshop. Many common spaces articulate these cells and allow to multiply the interactions between the inhabitants. Equal parts between outdoor and indoor space, these homes are places of life in osmosis with vegetation growing on both sides of the viaduct.