The Vexin Français Regional Natural Park is located in the Île-de-France region of France, covering parts of the departments of Val-d'Oise and Yvelines. Established in 1995, the park spans approximately 71,000 hectares and is known for its diverse landscapes, including rolling hills, forests, and agricultural fields. It aims to protect the natural environment while promoting sustainable development. The park is home to various flora and fauna, making it a popular destination for nature lovers and outdoor activities. Visitors can enjoy hiking, cycling, and exploring charming villages like La Roche-Guyon and Théméricourt, which showcase the region's rich cultural heritage.