Located in Saint-Germain-en-Laye, Île de France, “Paysage et patrimoine sans frontière” is an association , a provider of trainings offers for adults education. These adults belong to different communities between which there are many barriers: cultural, linguistic, social, territorial, generational. This context opens the association at the international, to contribute to intercultural dialogue, between the adults. The association relies on its expertise in matters of European projects as coordinator of a Comenius trainers training project about the pedagogy of European garden heritage (2000-2003), coordinator of Grundtvig projects for adults education, and of the Study Visit 2012 “ Long life training history of art”. This new thematic is highly valued at the national level, since the history of art is in the school curriculum. That new educational axe poses problems for the trainers , because all is new : methodology, objectives, training needs, privileging creativity, sensitive approach, transversely learning, The project “To train adults trainers in European art history” aims essentially to progress professional skills of its trainers, from the European art history as one of possible vector of the European citizenship of the adults. 16 trainers are selected to participate in this project, in partnership with training organizations of 3 UE countries: Italia, Portugal and Romania. The association “Paysage et patrimoine sans frontière”, as sending organization, ensures teaching assignments. It coordinates the European plan for development and collaborates with its partners for the evaluation of the mobility (Europass) of each participant. The home partners coordinate the organization, the on-site management, the interventions by experts, and collaborate with the French association for the evaluation. Located majority in Ile de France, the association “Paysage et patrimoine sans frontière” extends to the South of France: an antenna of the association is created in Cahors, a town recently coordinator of a Regio Comenius project, about Art history. This context explains the willingness of the association to recruit and to train new trainers. Erasmus+ project “To train adults trainers in European art history” aims - to close the trainer teams of Ile de France and Midi-Pyrénées, - to provide adult learners -including the most vulnerable- different ways to improve their knowledge and skills, facilitating their personal development and enhancing their job prospects, - to facilitate exchanges between trainers of different partner countries, to motivate the building of future Erasmus+ strategic partnerships.