The Regional Natural Park of the Chevreuse Valley is located in the Île-de-France region of France, just southwest of Paris. Established in 1985, it covers approximately 63,000 hectares and is known for its picturesque landscapes, including forests, rivers, and charming villages. The park aims to protect its natural and cultural heritage while promoting sustainable tourism. The park is home to diverse flora and fauna, making it a popular destination for nature lovers and outdoor activities such as hiking and cycling. Visitors can explore historical sites, including the Château de la Madeleine and the Abbey of Vaux-de-Cernay, which reflect the region's rich history.