Best natural monuments around Forges-Les-Bains are found within the Parc naturel régional de la Haute Vallée de Chevreuse, an area characterized by extensive green spaces, forests, and water landscapes. The region's natural features include significant wetlands, numerous springs, and diverse wooded areas. Forges-Les-Bains is notable for its rich wild flora, with over 500 identified species, and a landscape shaped by abundant water sources. These sites offer ecological interest and opportunities for outdoor activities.
Last updated: July 4, 2026
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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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The “Petit Launay” oak (the aulnoye), remarkable for its size and the distribution of its branches, seems to date back to the 15th century. The organizers of the Universal Exhibition of 1900 in Paris wanted to transport it to the capital, which attests to the interest that this Tree already presented. Mr Grisier, mayor of Bures and owner of “Petit Launay” fortunately declined this offer. This estate, a former stronghold from the 14th century, has been better known, since 1810, under the name of "The Virgin". A statuette is still visible on the surrounding wall of the property. It is crossed by the Vaularon, a tributary of the Yvette, hence the humidity conducive to the growth of alders. This tree has been classified in the list of “venerable trees in France”.
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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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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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They line the Vossery wood hiking trail
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On the Véloscénie, magnificent path leading to just opposite the Barn.
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Forges-les-Bains offers a variety of unique natural features. You can visit the Preserved Sand Quarry, which provides an exotic environment with its vast sand pit surrounded by trees. The area is also rich in water landscapes, including numerous springs, canalized ponds, and streams that have historically shaped the commune.
Yes, Forges-les-Bains is known for its significant wetlands and water bodies. The Étangs Baleine et Brûle Doux, located within the Angervilliers forest, are remarkable wetland areas with peat bogs that serve as a refuge for numerous original animal and plant species, including protected ones like dragonflies. The Pres d'Ardillières also features humid meadows at the confluence of streams, recognized for their rich biodiversity.
The region boasts a rich wild flora, with 510 species identified, placing it at the forefront for the northern half of the Essonne department. The wetlands, such as the Étangs Baleine et Brûle Doux, are particularly important for their diverse plant life and protected animal species, including various dragonfly populations.
Yes, the area is home to several remarkable trees. You can find The Oak of Petit Launay, which dates back to the 15th century and is notable for its size. Additionally, the Vallée Maréchal features an impressive alignment of centuries-old chestnut trees, and the The 11 Remarkable Oaks of Méridon Forest, around 200 years old, are classified and protected.
The natural monuments are excellent starting points for various outdoor activities. You can find many running trails, such as the 'Château de Pivot loop' or the 'Sandpit – Château de Forges-les-Bains loop'. For cycling, there are road cycling routes like the 'Pecqueuse church – Across the fields!' loop, and general cycling routes like the 'Château de Forges-les-Bains – Château du Marais loop'. You can explore more options on the Running Trails around Forges-Les-Bains, Road Cycling Routes around Forges-Les-Bains, and Cycling around Forges-Les-Bains guide pages.
Many natural monuments in the area are suitable for families. Vaux‑en‑Cernay Lake is ideal for picnics, and the waterfall at the Petit Moulin in Vaux-de-Cernay offers a scenic spot for exploration. The Preserved Sand Quarry also provides a distinct and engaging environment for all ages.
The natural monuments in Forges-les-Bains can be enjoyed throughout the year, but spring and autumn offer particularly pleasant conditions for outdoor activities. Spring brings lush greenery and blooming flora, while autumn showcases vibrant foliage, especially around the chestnut trees of Vallée Maréchal. The annual chestnut festival in Forges-les-Bains is also a great time to visit.
Yes, several natural sites have historical significance. The Vallée Maréchal's chestnut trees historically provided abundant harvests and are celebrated annually. The numerous springs and water features throughout the landscape historically supported hydrotherapy establishments and bottling activities, shaping the commune's built environment. Vaux‑en‑Cernay Lake was also a favored site by painters in the early 20th century due to its luminosity.
Visitors appreciate the scenic beauty and tranquility of the natural monuments. The Vaux‑en‑Cernay Lake is often highlighted for its breathtaking views and suitability for picnics. The waterfall at the Petit Moulin is praised for its bucolic setting, and the Preserved Sand Quarry offers a unique, exotic experience close to urban areas, making it feel like a short escape.
Yes, the forests and wooded areas surrounding Forges-les-Bains offer marked trails suitable for walking, cycling, or horseback riding. These areas, including communal woods, are often designated as sensitive natural areas (ENS), ensuring their preservation and providing well-maintained paths for exploration.
Many natural monuments are generally accessible for visitors, often located near marked trails. While specific wheelchair accessibility varies by site, areas like Vaux‑en‑Cernay Lake and the surrounding forests provide relatively easy access for walks. It's advisable to check specific trail conditions for individual monuments if mobility is a concern.
Many natural areas and trails in Forges-les-Bains are dog-friendly, especially the extensive forests and wooded areas. However, it's always recommended to keep dogs on a leash to protect local wildlife and ensure a pleasant experience for all visitors. Specific regulations might apply to protected wetland areas like the Étangs Baleine et Brûle Doux, so check local signage.


Extend your search for the best caves by checking out these guides of the top ones around Forges-Les-Bains: