The Communities @ Work for Green Citizenship project was born from the desire to strengthen the role of youth workers as promoters of environmental citizenship through innovative artistic and educational tools. Our main goal was to provide them with concrete methods to raise awareness among young people on environmental issues and to transform their communities into more ecologically aware and responsible environments. This need emerged clearly from the analyses conducted with the project partners, who operate in different contexts but share the same difficulties: the need to integrate sustainability education into their daily activities and the desire to acquire new skills to make their work more impactful. We live in an era of climate and social crisis in which the active participation of youth communities is essential to address global environmental challenges. However, youth workers often lack the necessary skills to effectively transmit these values. This project has responded to this need by offering targeted training, focused on the use of artistic practices and non-formal educational methodologies to strengthen the concept of Green Citizenship. The project represented a concrete response to the need to integrate the arts as tools of ecological awareness, making the educational process more accessible, engaging and transformative. The Training was inspired by international educational strategies, such as Environmental Citizenship Education (ECA), which emphasizes the importance of training active citizens who are aware of their environmental impact, both individually and collectively. ECA proposes an educational model based on six fundamental phases: investigation, action planning, civic participation, networking and sharing, support for environmental and social change, evaluation and reflection. These elements were the basis of our training path, which guided participants in the acquisition of practical tools to involve young people and local communities in environmental protection. The project was also closely linked to the Sustainable Development Goals of the United Nations 2030 Agenda, in particular Target 4.7, which promotes inclusive and quality education to spread the principles of sustainability, equity and active citizenship. The initiative was also part of the UNESCO Global Action Programme (GAP), which encourages the integration of sustainability into educational programs through innovative and participatory approaches. To ensure the achievement of the training objectives, the project adopted an experiential approach based on learning by doing and peer education methods. The program was built by taking into account the needs and skills of the participants – who were not be simple users, but active actors in the educational process - collected through a preliminary analysis conducted by the partners. In particular, the training course was structured around three fundamental pillars: Environmental Citizenship – Definition of the concept of Green Citizenship and strategies to integrate sustainability into educational practices. Artistic Tools for Environmental Education – Practical artistic workshops such as theater, creative recycling and digital media to develop innovative methods of awareness-raising. Social Entrepreneurship and Green Jobs – Meetings with experts in the environmental sector to offer youth workers new perspectives for professional growth and strategies to transform their activities into job opportunities. At the end of the project, youth workers acquired in-depth knowledge of environmental citizenship, innovative educational tools and skills to transform their professional practice. They developed leadership skills, design and management of educational activities based on the arts and sustainability. Furthermore, the project stimulated the creation of new international collaboration networks, among peers and between Associations, promoting the dissemination of good practices acquired within the communities they belong to. One of the objectives was to strengthen collaboration between partner organizations, which operate in different contexts but share the common goal of enhancing the role of nonformal education in promoting sustainability. The interaction between partners, all equally involved in each phase of the project, guaranteed a multidisciplinary approach, allowing participants to explore environmental citizenship from different perspectives and with varied methodologies.