This 10ha park, through which the Vanne and the Lingue run, is a precursor of the town's project for a green belt, which should ultimately go right around Sens. It is named after an obscure type of mill (1887) that ground oak bark to make tanbark, a powder used in leather tanning. For now it includes a rose garden, an arboretum, an animal enclosure, a playground and undergrowth.