TN+ landscape architects: The main idea of the project is to create an undulating green plinth stretching from facade to facade through the garden. The central concrete plateau takes the formal language of the general topography. The plateau and the accidental horizon generate various situations. Through the apertures one can sense the organic surface, giving the impression that the concrete plateau is suspended over the ground. An important part of the garden will be in the shade most of the year in reason of the proximity with the buildings. Therefore the preservation of the sunny zones represented a main goal during the conception phase. The canopy is composed of Gymocladus dioicus, a specie with medium development and light foliage, in order to preserve the luminosity of the garden. The organic shapes of the topography are underlined by a carpet of low perennials. Rainwater is infiltrated on the site, the hollows are occupied by lush wetland vegetation. The steel plates of the fencing will succeed in a gradient towards the top, inspired by the leaves drift by the wind blow.

Project name: Central garden block B4 / Seguin District
City: Boulogne Billancourt [Suburbs of Paris, France]
Developer: SAEM Val de Seine Aménagement
Client: NEXITY, Vinci
Completed: 2014
Area: 1 ha
Team: Landscape Architect Mandatory: TN+ landscape architects / Ingeneering : SEGIC / Constructing Entreprise: Vallois // Architectes of the surrounding buildings : Brenac et Gonzalez, Sauerbruch Hutton, KOZ
Project manager: Andras Jambor
Project manager during the competition phase: Matthieu Picot