Best natural monuments around Thiers-Sur-Thève encompass a variety of natural features, from expansive forests to unique geological formations and serene lakes. The region offers diverse outdoor activities amidst its natural landmarks. Visitors can explore ancient trees, distinctive sand dunes, and historical sites integrated with nature. This area provides opportunities for hiking, fishing, and enjoying the natural landscape.
Last updated: May 8, 2026
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From this summit you can enjoy a panoramic view of the surrounding countryside and the Halatte forest. You can also discover the historical and cultural heritage of the region, such as the ruins of the Aumont castle and the Saint-Martin chapel.
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The Jean-Jacques Rousseau park in Ermenonville is a beautiful example of a landscaped garden, inspired by the paintings of Poussin and Claude Lorrain. There you can admire ponds, meadows and groves, as well as small buildings evoking different virtues, values or characters. The park is named after the philosopher Jean-Jacques Rousseau, who spent the last six weeks of his life there and was buried on Île des Peupliers. You can follow in his footsteps and meditate on his writings, engraved on certain ruins. The park is also a place of literary pilgrimage, as many famous writers and artists have visited it over the centuries. You can enjoy the tranquility and harmony of nature in this park, which is open Tuesday to Sunday, from 11 a.m. to 5:30 p.m.
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The Jean-Jacques Rousseau Park in Ermenonville is a beautiful example of a landscaped garden, inspired by the paintings of Poussin and Claude Lorrain. You can admire ponds, meadows and groves, as well as small buildings that evoke different virtues, values or characters. The park is named after the philosopher Jean-Jacques Rousseau, who spent the last six weeks of his life there and was buried on Île des Peupliers. You can follow in his footsteps and meditate on his writings, engraved on certain ruins. The park is also a place of literary pilgrimage, as many famous writers and artists have visited it over the centuries. You can enjoy the tranquility and harmony of nature in this park, which is open from Tuesday to Sunday, from 11:00 a.m. to 5:30 p.m.
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A 3-meter-high isolated menhir, made of sandstone, with a typical shark's fin shape, suggesting that a part has been broken. Accessible by walking along the wood in the field, it is visible from the field or the woods.
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The ponds of Commelles are part of the beautiful forest of Chantilly and therefore of the Regional Natural Park Oise-Pays de France It is a protected site, rich in biodiversity, with thousands of frogs in March. In the 19th century, the ponds were frequented by romantic artists and authors such as Chateaubriand.
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Here we find a quite astonishing sandy mound in the middle of the forest! A small dune of Pilat in the middle of the Halatte forest. On your mountain bikes!
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Small detour for nature lovers in the forest of Pontarmé. This remarkable tree, the Chêne des Grès, is a sessile oak 23 meters high, about 300 years old. It shines in the middle of this forest and is worth a look!
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The region features several distinctive geological formations. You can visit Butte d'Aumont, which is known for its astonishing sandy mound resembling a small dune within the Halatte forest. Another notable spot is the Butte aux Gendarmes, a 203-meter high mound that is also a unique sand dune within the Chantilly forest massif.
Yes, the area is home to impressive ancient trees. A must-see is The Chêne des Grès, a remarkable sessile oak in the Pontarmé forest. This tree stands 23 meters high and is approximately 300 years old. The vast Chantilly Forest also boasts ancient oaks, lime trees, and beeches.
Beyond natural beauty, you can explore sites with historical significance. Jean-Jacques Rousseau Park in Ermenonville is a landscaped garden with philosophical and literary connections, as it was Rousseau's final resting place. The La Pierre Longue Menhir is a 3-meter-high sandstone monument, offering a glimpse into ancient history. Additionally, the Butte d'Aumont offers views of the ruins of Aumont castle and the Saint-Martin chapel.
Absolutely. The Étangs de Commelles are part of the family-friendly Chantilly forest and are a protected site rich in biodiversity. Jean-Jacques Rousseau Park is another excellent family-friendly option, with its beautiful landscaped gardens, ponds, and groves. Les Étangs de Saint-André also functions as a natural reserve and recreational center, making it suitable for families.
The region offers a variety of outdoor activities. The Chantilly Forest provides extensive opportunities for hiking, cycling, and horseback riding. For those interested in fishing, the Domaine d'Halatte Fishing Ponds and Les Étangs de Saint-André offer serene environments for sport fishing with 'No-Kill' policies. You can also find numerous routes for cycling, mountain biking, and running. For cycling routes, check out the Cycling around Thiers-Sur-Thève guide. For mountain biking, explore the MTB Trails around Thiers-Sur-Thève guide, and for running, see the Running Trails around Thiers-Sur-Thève guide.
There are excellent fishing opportunities in the vicinity. The Domaine d'Halatte Fishing Ponds offer 100 hectares across three distinct ponds, known for clear water and populations of carp, pike, and zander. Les Étangs de Saint-André is another private domain with six high-quality ponds, well-stocked with various fish including carp, trout, and sturgeon, and features dedicated trout ponds and carpodromes. Both operate on a 'No-Kill' policy.
The natural monuments around Thiers-Sur-Thève are rich in biodiversity. The Étangs de Commelles are a protected site known for thousands of frogs in March. The vast Chantilly Forest is home to wildlife such as wild boars, roe deer, and stags. The fishing ponds also support diverse aquatic ecosystems.
Yes, the Butte d'Aumont provides panoramic views of the surrounding countryside and the Halatte forest. It's an excellent spot to take in the expansive natural landscape.
Visitors particularly appreciate the tranquility and natural beauty of the area. Many enjoy the diverse landscapes, from the serene lakes of Étangs de Commelles to the unique sandy mounds like Butte d'Aumont. The opportunity to immerse oneself in ancient forests, discover remarkable trees like The Chêne des Grès, and engage in activities like hiking and fishing are also highly valued.
The Jean-Jacques Rousseau Park is open from Tuesday to Sunday, from 11:00 a.m. to 5:30 p.m.
Yes, some natural monument areas offer facilities. The Domaine d'Halatte Fishing Ponds provide comfortable chalets for rent, a snack bar, and essential facilities like showers and toilets. Les Étangs de Saint-André also has on-site dining options, making it convenient for visitors.
The Chantilly Forest, a sprawling massif covering 6,344 hectares, features extensive, well-marked paths suitable for hiking. These trails wind through diverse landscapes of ancient trees, offering numerous opportunities for exploration.


Extend your search for the best caves by checking out these guides of the top ones around Thiers-Sur-Thève: