In 1915 automotive entrepreneur André Citroën built a vast car manufacturing plant here in the 15e. After it closed in the 1970s, the vacated site was eventually turned into this forward-looking 14-hectare urban park. Its central lawn is flanked by greenhouses, dancing fountains, an elevated reflecting pool, and smaller gardens themed around movement and the (six) senses. Opening hours vary greatly depending on the season – check signs posted at the entrances.