With contributions by Thierry Labussière, Élisabeth Lemercier, Louise de Constantin, Françoise Crémel, Christian Ruby, Seton Smith, Akio Suzuki, Caroline Coll-Seror, Michel Jourdheuil, Noëlle Chabert and Catherine Grout. Gardens and works of art play imagination and intelligence together. When an old or historic garden hosts works newly created for its space-time, the visitors' experience concerns a work made by many hands. The texts written by artists, a landscape designer, an architect, curators, a philosopher and an art historian thus deal with the history of exceptional and little-known gardens, their renovation and artists' projects, and invite us to visit the places evoked. Proceedings published on the occasion of the day of meetings at the Centre des arts d'Enghien-les-Bains.