Deployed over 3,526 hectares, the forest of Grésigne remains today the most important forest of the Tarn and the largest oak grove (60% of oak, 15% of pedunculate oak) in the South of France. Puycelsi is like an outpost in the Causses du Quercy. Crossing the old bastide reveals architectural treasures. The course is dedicated to the cause of plants, from the Orchard Conservatory to the ancestral vaults of the oak groves of Grésigne.