This park is a fun, postmodern version of a French formal garden, designed by Gilles Clément and Alain Prévost. It comprises glasshouses, computerised fountains, waterfalls, a wilderness and themed gardens featuring different coloured plants and even sounds. Stepping stones and water jets make it a garden for pleasure as well as philosophy. The tethered Eutelsat helium balloon takes visitors up for panoramic views. If the weather looks unreliable, call 01.44.26.20.00 to check the programme.