# réserve naturelle régionale du site géologique de Vigny-Longuesse, France: what it is and when to go

> réserve naturelle régionale du site géologique de Vigny-Longuesse is a nature reserve in Île-de-France (Maudétour-en-Vexin). Interests: Nature and Wildlife. The best time to visit is April to October. In June there are 15 h 58 of daylight, and in December, 8 h 01. It has an article in one Wikipedia, so it is not one of the busiest places in France: one to enjoy at a calmer pace. Here is what it is, where it lies, when to come, how to get there and what else is nearby to turn it into a trip.

- Address: https://kokai.app/en/paises/europa/francia/reserve-naturelle-du-site-geologique-de-vigny-longuesse/
- Reviewed on: 2026-10-02
- Language: en

## In a nutshell

- **What it is:** Nature reserve in Île-de-France · Nature, Wildlife
- **Where:** France
- **Best time:** April to October.
- **Nearest airport:** CDG Paris (Roissy-en-France, Val-d'Oise), 46 km as the crow flies
- **Run by:** Conseil Général du Val-d'Oise.
- **Coordinates:** 49.06794, 1.92706

## What it is and where

réserve naturelle régionale du site géologique de Vigny-Longuesse is a nature reserve in Île-de-France (Maudétour-en-Vexin). It has an article in one Wikipedia, so it is not one of the busiest places in France: one to enjoy at a calmer pace.

It is in [Maudétour-en-Vexin](https://kokai.app/en/paises/europa/francia/maudetour-en-vexin/), where this site lists 22 more places to see, 11 km from the centre.

Its coordinates are 49.06794, 1.92706; the nearest main airport is Charles de Gaulle International Airport (CDG, Paris (Roissy-en-France, Val-d'Oise)), 46 km as the crow flies. How to get around France (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/europa/francia/#moverse).

- [Where it is](https://www.google.com/maps/search/?api=1&query=49.067935%2C1.92706)
- [Directions](https://www.google.com/maps/dir/?api=1&destination=49.067935%2C1.92706)

- **Run by:** Conseil Général du Val-d'Oise.

It is one of the [Nature](https://kokai.app/en/paises/europa/francia/naturaleza/) and [Wildlife](https://kokai.app/en/paises/europa/francia/fauna/) places in France. In [Kokai](https://kokai.app/en/) it is already on your trip map next to the places you save yourself, and it goes into a day's plan with one tap.

## When to go

The best time to visit réserve naturelle régionale du site géologique de Vigny-Longuesse is **April to October**.

| Mes | Época | Hours of daylight |
| --- | --- | --- |
| January | Possible | 8 h 27 |
| February | Possible | 9 h 54 |
| March | Possible | 11 h 34 |
| April | Best time | 13 h 28 |
| May | Best time | 15 h 05 |
| June | Best time | 15 h 58 |
| July | Best time | 15 h 36 |
| August | Best time | 14 h 11 |
| September | Best time | 12 h 20 |
| October | Best time | 10 h 30 |
| November | Possible | 8 h 51 |
| December | Possible | 8 h 01 |

In June there are 15 h 58 of daylight, and in December, 8 h 01. Daylight hours are calculated from the site's latitude for the 15th of each month; when planning a full day on foot they matter as much as the weather.

| What you come for | Best time | Possible |
| --- | --- | --- |
| Nature | April to October | November to March |
| Wildlife | April to October | November to March |

It is not the same trip whatever you come for: réserve naturelle régionale du site géologique de Vigny-Longuesse has a different season depending on what you want to do here, and [Kokai](https://kokai.app/en/) puts it in the right month for you.

When to go to France in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/europa/francia/#cuando-ir).

## Before you go to France

To enter France there are 6 things to sort out before you leave, starting with “Valid ID card (DNI) or passport”: they are all, with their deadlines, in [the France checklist](https://kokai.app/en/paises/europa/francia/#antes-de-salir). Currency: Euro (EUR); plugs: Type C and E · 230 V · 50 Hz; emergencies: 112 · 15 ambulance (SAMU) · 17 police · 18 fire brigade.

In [Kokai](https://kokai.app/en/) you tick off the checklist inside your trip, and each item reminds you when it is time to do it.

## What is nearby

- [Château de Vigny](https://kokai.app/en/paises/europa/francia/chateau-de-vigny/): A château in the commune of Vigny, Val d'Oise, France · 1.0 km
- [Ferme Brasserie du Vexin](https://kokai.app/en/paises/europa/francia/ferme-brasserie-du-vexin/): Brewery · 3.1 km
- [Château de Villette](https://kokai.app/en/paises/europa/francia/chateau-de-villette/): Castle · 4.1 km
- [Château de Guiry](https://kokai.app/en/paises/europa/francia/chateau-de-guiry/): Castle · 7.1 km
- [Allée couverte du Bois-Couturier](https://kokai.app/en/paises/europa/francia/allee-sepulcrale-couverte-neolithique-dite-du-bois-couturier/): Gallery grave in Guiry-en-Vexin, France · 8.2 km

Distances are as the crow flies. Everything else is in [the France guide](https://kokai.app/en/paises/europa/francia/).

## More in France: Nature

- [Mont Blanc](https://kokai.app/en/paises/europa/francia/mont-blanc/): highest mountain in the Alps
- [Chartres Cathedral](https://kokai.app/en/paises/europa/francia/cathedrale-notre-dame/): medieval Catholic cathedral in Chartres, France
- [Lascaux](https://kokai.app/en/paises/europa/francia/lascaux-cave/): cave in southwestern France famous for its Paleolithic cave paintings
- [Chauvet Cave](https://kokai.app/en/paises/europa/francia/grotte-chauvet/): cave in France
- [Champ de Mars](https://kokai.app/en/paises/europa/francia/campo-de-marte/): large public green space in Paris, France
- [Jardin du Luxembourg](https://kokai.app/en/paises/europa/francia/luxembourg-garden/): urban park in Paris, France

Every France place under Nature, each with its season, is on [its page](https://kokai.app/en/paises/europa/francia/naturaleza/).

## Frequently asked questions

### What is réserve naturelle régionale du site géologique de Vigny-Longuesse?

It is a nature reserve in Île-de-France. It has an article in one Wikipedia, so it is not one of the busiest places in France: one to enjoy at a calmer pace.

### When is the best time to visit réserve naturelle régionale du site géologique de Vigny-Longuesse?

April to October. In June there are 15 h 58 of daylight, and in December, 8 h 01.

### How do you get to réserve naturelle régionale du site géologique de Vigny-Longuesse?

The nearest main airport is Charles de Gaulle International Airport (CDG), 46 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=49.067935%2C1.92706) opens the route on the map, and how to get around France is explained in [its country guide](https://kokai.app/en/paises/europa/francia/#moverse).

### How do I add it to my trip?

With one tap. In Kokai it is already on the France map, next to the places you save yourself: add it to a day's plan, give it a time and, if you like, get a reminder when you pass nearby.

### What else is around here?

Nearby you have [Château de Vigny](https://kokai.app/en/paises/europa/francia/chateau-de-vigny/), [Ferme Brasserie du Vexin](https://kokai.app/en/paises/europa/francia/ferme-brasserie-du-vexin/), [Château de Villette](https://kokai.app/en/paises/europa/francia/chateau-de-villette/). The rest is in [the France guide](https://kokai.app/en/paises/europa/francia/).

Data from [OpenStreetMap](https://www.openstreetmap.org/way/306399644), licensed under the ODbL, and from [Wikidata](https://www.wikidata.org/wiki/Q16774773), CC0. More about réserve naturelle régionale du site géologique de Vigny-Longuesse on [Wikipedia](https://fr.wikipedia.org/wiki/R%C3%A9serve_naturelle_r%C3%A9gionale_du_site_g%C3%A9ologique_de_Vigny-Longuesse). Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).