From 4 April to 29 November 2026, the Yvelines invites you to discover its biodiversity through 50 free nature outings. Organised by the Department, these varied events include walks, workshops and fascinating discoveries.
Practical information
| Dates | From 4 April 2026 to 29 November 2026 |
| Address | Yvelines, yvelines |
| Admission | Free entry |
| Organiser | Yvelines Department |
| Updated | 24 July 2026 |
Why go?
These outings offer a unique opportunity to immerse yourself in nature, with activities suitable for everyone. Perfect for families, they allow you to discover the local flora and fauna whilst learning about the environment.
What to see / do
These outings promise fascinating discoveries in the heart of the Yvelines’ natural landscapes.
Good to know
The outings are free but require prior registration. As these events are very popular, it is advisable to book in advance.
How to get there
Accessible by car or public transport from Paris. It takes about 45 minutes by car from Châtelet-en-Les-Halles.
What to do nearby?
You can also explore the Palace of Versailles (30 minutes’ drive away) and its royal park. The Haute Vallée de Chevreuse Regional Nature Park is another must-see, just 40 minutes’ drive away, and perfect for a day out in the countryside.
Things to bear in mind
| Ideal for | Families and nature lovers |
| Estimated visiting time | 2 to 3 hours per outing |
| Best time to visit | Spring to see the flora in full bloom |
Frequently asked questions
How do I sign up for the outings?
Registration is mandatory to participate in each outing. Details will be available on the Yvelines Department website.
Are there specific activities for children?
Yes, several family workshops are planned to introduce children to nature in a fun way.
Do the outings take place in all weather conditions?
The outings will go ahead unless there are extreme weather conditions. Be sure to check before coming.
Can I participate in multiple outings?
Yes, you can sign up for as many outings as you wish, as long as there are available spots.
What is the minimum age to participate?
The outings are open to all ages, and activities suitable for young children will also be offered.