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This seminar took place the 23rd of May 2016 at the Architecture Faculty of Lisboa University (FAUL). It has been organized by Grégoire Chelkoff (architect, professor at ENSAG/ researcher at CRESSON UMR AAU), Magali Paris (Landscape architect, associate professor at ENSAG/ Researcher at CRESSON UMR AAU) and Pedro Pacheco (architect, assistant-professor at FAU Lisboa).It ended a recently achieved research, in march 2016, financed by MEDDE and ADEME (ITTECOP Program):Roadside nature / 2: allotment gardens for a sustainable design of transport infrastructure (files available on HAL SHS: final report and appendixes).Speakers were architects, geographers, landscape architects, chemists, agronomists… Presentations and debates lead to underline several stakes and knowledge and action key elements for France and Portugal. The speakers showed how the presence and the development of the urban allotment gardens is also a concern of landscape and agricultural infrastructure for the city and how urban allotment gardens interact with transport infrastructures.Allotment gardens are a way to keep living soils in the urban context, they are also a financial support for the poorest urban families. Gardening has a fundamental social role and is a memory of the XXth century rural exodus.Gardening retrofits the link between the inhabitants and the territory by introducing new neighborhood habits and by settling back the pleasure and art of the soil work. Alloment gardens bring biodiversity within the cities and are faced by pollution issues (noise, air, soil, vegetables…) as well as they form atmospheres, spaces and particular landscapes.The city of Lisboa deals, since its foundation, with the management of cultivated areas under the shape of allotment gardens. Those gardens are considered disorganized, as they take up spontaneously on the productive soils of the valley, on the road and subway sides, close to the social housing buildings, in the urban in-between. This situation could be perceived as the expression of kind of the lack of planification of the city.The persistent duality between rural and urban draws a new way to design the city. The theory of the global landscape, in which agricultural and urban fabrics are interlinked without losing their own characteristics and their independent operating; as well as they support the society concerns in terms of agricultural issues as well as urban life.The three following aspects have been developed by comparing the french situation (Isère and Ile-de-France) to the portuguese in order to discuss operating criteria for the future: city and spatial and landscape organization of the gardens: public spaces, atmosphere qualities, spatial qualities, links to transport infrastructure, landscape and architecture, urban policies and social practices: social and spatial aspects, economic impacts, gardening and dwelling practices environmental impacts: water, soil, air, crops… (agricultural types, biodiversity, pollutions, soil history…)Speakers:José Aguiar, architect, director of the master cycle at FAULMagali Paris, landscape architect, associate professor researcher (ENSAG-Laboraty Cresson)Gregoire Chelkoff, architect, professor and researcher (ENSAG-Laboraty Cresson)Pedro Pacheco, architect, assistant professor (FAUL/ Pedro Pacheco arquitectos)Duarte d'Araujo Mata, landscape architect at CMLJoao Gomes Da Silva, landscape architect, professor (Global)Manuela Raposa Magalhaes, landscape architect, researcher (ISA)Teresa Leitao, Hydro-geologist and researcher (LNEC)Miguel Pedro Mourato, Chemist and researcher (ISA)[caption id="attachment_11143" align="aligncenter" width="550"] From left to right and top to bottom:1. José Aguiar, Pedro Pacheco, Gregoire Chelkoff, Magali Paris2. Duarte d'Araujo Mata3. Joao Gomes Da Silva4. Manuela Raposa Magalhaes5. Miguel Pedro Mourato6. Teresa Leitao[/caption]&#160;[caption id="attachment_11082" align="aligncenter" width="545"] Manuela Raposo Magalhães, architecte paysagiste, chercheure (ISA)[/caption]&#160;[caption id="attachment_11083" align="aligncenter" width="944"] Lisbonne, Vallon de Chelas Habitat et jardins, Photo : Pedro Pacheco[/caption]&#160;[caption id="attachment_11084" align="aligncenter" width="944"] Garches, Camions et jardins, Photo : Grégoire Chelkoff[/caption]&#160;[cite]