Parc des Bains is a park located in the region of Jura, in the Franche-Comté of eastern France. It was built under Camille Prost and was completed in 1904. In the late 19th century, Camille Prost wanted to create a Spa in the city of Lons-le-Saunier, to showcase its salt water. The park, covering 7 hectares, was built to embellish the surrounding area and was designed by the French horticulturist and landscape architect .