Fête de la Nature in Val-d'Oise (95) 2025: free tips for going green

Nature Festival 2026 lands in Val-d'Oise (95) from May 20 to 25 to mark its 20th anniversary. Bird-watching walks, nature hikes, the LPO refuge, and naturalist photography are on the program, free of charge.

The sunny days are back, and with them the urge to make the most of the outdoors and enjoy the parks, gardens, squares and forests of Paris and Île-de-France. If you’re dreaming of a nature escape too, rejoice! From May 20 to 25, 2025, the Nature Festival returns to our beautiful region, bringing a host of free activities and events for the entire family.

This festive event is a great way to appreciate the beauty and richness of the environment that surrounds us, while learning a little more about fauna, flora and biodiversity in general. And the Fête de la Nature doesn't just take place in Paris: near you, a whole host of events are scheduled this May. In the Val-d'Oise region, numerous activities are planned in several towns and parks.

Worried about getting lost in the event's packed program? We understand, which is why we've selected a series of recommendations for you to discover below, so you can enjoy the best Fête de la Nature 2025 possible in the Val-d'Oise!

Here's the 2026 Nature Festival program for Val-d'Oise (95):

Nature Festival in L'Isle-Adam 2026, a free must-see in Val-d'Oise
Nature Festival 2026 comes to La Rosière Park in L'Isle-Adam, Val-d'Oise, this Saturday, May 23, 2026. On the program: nature stalls, biodiversity discovery, and activities for children, all free of charge. [Read more]

Also on the program:

20 May 2026, 2–4 p.m. : Birdwatching walk with LPO Île-de-France, Maison de quartier Le Douze, 12 Allée des Petits Pains, Cergy (RER A Cergy-Saint-Christophe). Booking: natureenville@proton.me
20 May, Wednesdays 27 May, Saturday 23 May, Sunday 24 May, 10 a.m.–12 p.m. and 2–4 p.m. : Guided tour of the LPO Nature Refuge Islet, Saint-Leu-la-Forêt. Booking: groupe.pf2@lpo.fr
18 May to 28 May 2026 : Photo exhibition "At the Heart of Biodiversity", Maison Consulaire and the market’s tree-lined square, Saint-Leu-la-Forêt. Free entry.
22 May 2026, 4:30–6 p.m. : Plankton activity with Wanda Nature and Sahima Hamlaoui (MNHN), Maison Consulaire, Saint-Leu-la-Forêt.
25 May 2026, 2–4 p.m. : Hike "Discovering the Purple Orchid", Buttes du Parisis, starting at the Prairie entrance, parking by the Forest, rue Jacques Desforges, Sannois. Booking: association.e.v.a@sfr.fr or evelyne.r1@sfr.fr

Take advantage of these free activities to discover the rich natural and cultural heritage of Val-d'Oise. The Festival of Nature is a unique opportunity to dive into educational and entertaining activities for families or friends. Don’t miss these opportunities to explore and celebrate nature.

For even more great ideas, check out the comprehensive guide to Fête de la Nature activities across France. Be sure to book your spot for certain activities, online or on-site, depending on availability!

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