Clément Willemin

is a co-founder of COAL, a visual artist, a landscape architect and an urban planner. A graduate of the École Nationale Supérieure du Paysage de Versailles, he founded the BASE agency in 2000 (70 people), then his agency Wald (Willemin Architecture Landscape Design) in 2019. He is the author of more than 500 projects for public spaces, exhibitions and conferences in France and abroad. He has taught landscape and urban planning in Versailles, Strasbourg, Zurich, and Vienna. A member of the Architectural Design Association of Nippon, the administrative council of the School of Landscapes of Ecological Transition, alongside Jacqueline Osty and Gilles Clément, he is publishing his first landscape essay in 2019: Walden x.

  • About us
    About us

    COAL mobilizes artists and cultural actors on societal and environmental issues and accompanies the emergence of a new culture of ecology through its actions such as the COAL Prize, curating exhibitions, advising institutions and communities, European cooperation, and the animation of conferences, workshops and the first dedicated website


    COAL has been awarding the COAL Prize Art and Environment every year since 2010 and the COAL Student Prize - Culture & Diversity since 2020.

  • Projects

    Major projects linked to the major events in political ecology, in connection with natural or urban environments.

  • Artistic direction
    Artistic direction

    About fifty exhibitions throughout France, cultural actions, works in the public space, and project support to contribute to the emergence of a new culture of ecology.


    Cooperation programs on a European and international scale, support for institutions in their ecological transition through tailor-made accompaniment and training, promotion of arts and ecology issues through publications and numerous conferences and workshops.