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France
Ile-de-France
Rambouillet

Longvilliers

Top 5 Natural Monuments around Longvilliers

Best natural monuments around Longvilliers are found within a landscape characterized by the Rémarde and Gloriette river valleys, offering meadows and wooded areas. The commune is situated near the Forêt de Rambouillet and within the Parc Naturel Régional de la Haute Vallée de Chevreuse, providing extensive natural spaces. These areas contribute to local biodiversity and offer opportunities for outdoor activities. The region provides a natural setting for exploration and recreation.

Best natural monuments around Longvilliers

  • The most popular natural monument…

Last updated: July 4, 2026

Vaux‑en‑Cernay Lake

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Breathtaking view of the pond
ideal for a picnic

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Preserved Sand Quarry

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Here we find a vast sand pit in the middle of the trees. The preserved setting is quite exotic. It's hard to believe that we are a few kilometers from …

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On the Véloscénie, magnificent path leading to just opposite the Barn.

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The Caves of Sermaise

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The 3 cellars of Sermaise constitute the most important Essonne site for the hibernation of chiroptera. Indeed 6 different species of bats have been observed

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Chêne des six frères

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Monstrous!
a small bench to meditate and learn humility in the face of the 500-year-old beast

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Guillaume Staquet
May 3, 2025, Lake of Vaux-en-Cernay

The turtle head welcomes you at the end of the hike with its two big, friendly eyes!

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A lovely passage towards the abbey and waterfalls of Vaux-en-Cernay.

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Pretty water point in a bucolic area near Vaux-en-Cernay. Perfect for recharging your batteries and forgetting the Parisian frenzy for an afternoon!

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Beautiful place...

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The 3 cellars of Sermaise constitute the most important Essonne site for the hibernation of chiroptera. Indeed 6 different species of bats have been observed

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Very nice path but sandy in places. It was complicated with 32 tires but it was worth it.

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Sometimes sandy and slippery

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On the Véloscénie, magnificent path leading to just opposite the Barn.

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Frequently Asked Questions

What unique natural features define the Longvilliers area?

The Longvilliers area is characterized by the open valleys of the Rémarde and Gloriette rivers, featuring meadows and wooded areas. The Rémarde river, with its meandering course and distinctive white willow 'cordons,' is a prominent feature. The region is also influenced by the nearby vast Forêt de Rambouillet and is situated within the Parc Naturel Régional de la Haute Vallée de Chevreuse, offering diverse natural landscapes.

Are there family-friendly natural monuments to visit near Longvilliers?

Yes, several natural monuments are suitable for families. Vaux‑en‑Cernay Lake is ideal for a picnic with a beautiful viewpoint. The area around The waterfall at the Petit Moulin in Vaux-de-Cernay offers a bucolic setting for family hikes. Additionally, the Preserved Sand Quarry provides a unique natural environment where children can enjoy playing in the sand.

What kind of wildlife can I expect to see around Longvilliers' natural areas?

The river valleys and wooded areas around Longvilliers support a diverse array of flora and fauna. The region's proximity to the Forêt de Rambouillet and its location within the Parc Naturel Régional de la Haute Vallée de Chevreuse mean you might encounter various bird species, small mammals, and insects. Notably, The Caves of Sermaise are an important site for chiroptera, with six different bat species observed hibernating there.

Where can I find a scenic viewpoint for a picnic near Longvilliers?

For a scenic picnic spot, head to Vaux‑en‑Cernay Lake. It offers a breathtaking viewpoint over the Etang de Cernay and is noted for its luminosity, making it an ideal location for a relaxing break amidst nature.

Are there any interesting geological formations or unique natural sites to explore?

Yes, the Preserved Sand Quarry is a distinct natural monument featuring a vast sand pit nestled among trees. This preserved setting offers an exotic feel, providing a unique geological environment to explore. Additionally, The Caves of Sermaise offer an intriguing underground natural formation.

What outdoor activities are available near Longvilliers' natural monuments?

The Longvilliers area, with its natural monuments and proximity to the Forêt de Rambouillet and regional parks, offers extensive opportunities for outdoor activities. You can find numerous trails for hiking, cycling, and mountain biking. For specific routes, explore the nearby gravel biking, running, and MTB trails guides.

Can I find hiking trails suitable for different difficulty levels?

Yes, the region offers a variety of trails. For example, the area around The waterfall at the Petit Moulin in Vaux-de-Cernay is known for its bucolic hikes, suitable for intermediate levels. The broader Forêt de Rambouillet and Parc Naturel Régional de la Haute Vallée de Chevreuse provide trails ranging from easy strolls to more challenging routes, catering to various fitness levels.

Are there natural monuments accessible by public transport?

While Longvilliers itself is a rural commune, access to some natural areas might be possible via regional bus services connecting to nearby towns. However, for direct access to many natural monuments and trailheads, personal transport is generally recommended for convenience and flexibility. It's advisable to check local public transport schedules for specific routes to the smaller villages surrounding these sites.

What is the best time of year to visit the natural monuments around Longvilliers?

The natural monuments around Longvilliers are beautiful throughout the year. Spring offers lush greenery and blooming flora, while autumn provides stunning foliage colors in the forests. Summer is ideal for longer outdoor activities, and even winter can be picturesque, especially after a fresh snowfall. For hiking and cycling, spring and autumn generally offer the most comfortable temperatures.

Are there dog-friendly natural areas or trails in the Longvilliers region?

Many natural areas and trails in the Longvilliers region, particularly within the Forêt de Rambouillet and the Parc Naturel Régional de la Haute Vallée de Chevreuse, are generally dog-friendly. It's always recommended to keep dogs on a leash, especially in areas with wildlife or near livestock, and to follow local regulations regarding pet access to ensure a pleasant experience for everyone.

What do visitors particularly enjoy about the natural monuments here?

Visitors appreciate the tranquility and scenic beauty of the Longvilliers area. The Vaux‑en‑Cernay Lake is loved for its idyllic setting and luminosity, making it a favorite for picnics. The bucolic site of The waterfall at the Petit Moulin in Vaux-de-Cernay is highly regarded for beautiful hikes. The Preserved Sand Quarry offers a unique, exotic natural environment that feels far from the city.

Where can I find a waterfall near Longvilliers?

You can visit The waterfall at the Petit Moulin in Vaux-de-Cernay. This natural monument features an artificial waterfall near a historic mill, set within a charming, bucolic area perfect for hikes.

Are there any natural trails suitable for cycling near Longvilliers?

Yes, the region offers several options for cycling. The Gravel Trail of the Haute Vallée de Chevreuse is a notable natural monument that serves as a cycle path, though it can be sandy in places. The broader network of trails in the Forêt de Rambouillet and the regional natural parks also provides extensive opportunities for both road and off-road cycling.

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Extend your search for the best caves by checking out these guides of the top ones around Longvilliers:

Le Perray-En-YvelinesVieille-Église-En-YvelinesLes Essarts-Le-RoiHaute Vallée De ChevreuseAuffargisSaint-Rémy-L'HonoréCoignièresLes BréviairesGazeranPoigny-La-ForêtMagny-Les-HameauxLévis-Saint-NomSaint-Léger-En-YvelinesJouars-PontchartrainDampierre-En-YvelinesVoisins-Le-BretonneuxSenlisseMilon-La-ChapelleLa Celle-Les-BordesCernay-La-VilleSaint-Rémy-Lès-ChevreuseÉlancourtSaint-ForgetBullionChevreuseLe Mesnil-Saint-DenisClairefontaine-En-YvelinesHermerayChoiselBonnellesBazoches-Sur-GuyonneLes MesnulsSonchampMaurepasLe Tremblay-Sur-MauldreSaint-LambertLa VerrièreNeauphle-Le-VieuxRochefort-En-YvelinesSaint-Arnoult-En-YvelinesMéréLa Boissière-ÉcoleGambaiseuilMareil-Le-GuyonGrosrouvreMontfort-L'AmaurySaint-HilarionGalluisSainte-MesmeMillemontGarancièresÉmancéVicqLa Queue-Les-YvelinesBoissy-Sans-AvoirPonthévrardRaizeuxBéhoustOrcemontOrphin

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