Open 363 days a year, the site is in perpetual metamorphosis thanks to the International Garden Festival, which invites landscape gardeners and designers from all over the world to propose projects combining creation, poetry and nature. At the end of the competition, experimental gardens are set up which, together with the "Green Cards" given to guests, completely renew the visit of the Domaine.
In 2021, the theme of this laboratory of contemporary garden creation was "Biomimicry in the garden : nature, an infinite source of inspiration" and attracted a variety of audiences : French and foreigners, experts and amateurs, young and old, all gathered in this site with many other attractions.
In 2023, it is the theme of resilience that guides the designers' work, as their creation must both take into account ecological constraints and reinforce the presence of plants in their plot.