in number, these represent 6.5% of homes. Thermal baths The spa treats respiratory diseases and rheumatism. They use a hot spring at 50 °C and 110,000 overnight stays are made through this activity. The station is given financial autonomy to hire 76 employees in the high season (September–October). The establishment has a Zen Space and Fitness offering massages of the face and the body, and swimming in thermal water at 33 °C. Local culture and heritage Places and monuments The Dalle à ammonites, a classified site, is a rocky layer dating back 200 million years, where one can find more than 1,500 fossils of ammonites containing some which reach a diameter of . Religious architecture The commune maintains a southern aspect and has remarkable heritage items including two cathedrals, an archaeological crypt under the Cathedral of Notre-Dame-du-Bourg [Our Lady of the City], the chapels (Saint Pancrace, Our Lady of Lourdes, etc.) The , an historical monument, is a Romanesque cathedral whose foundations date back to the 9th century. Victim of numerous attacks and looting, it was renovated at the beginning of the 13th century. Parts from the 11th and 12th centuries still exist. Its white marble altar is of the Merovingian era. An archaeological crypt in the basement of the cathedral aids in the discovery of the history of Digne-les-Bains. In the crypt is the exact location of the origins of the city, attested by the presence of ancient walls from the 1st century AD. This corresponds to an urban space and implementation of three buildings of Christianity from the 5th century to the 11th century. The Saint-Jérôme Cathedral, also an historical monument, is a Gothic cathedral from the 15th and 16th centuries. The facade is from the 19th century. The Notre-Dame-de-Lourdes Church was built in 1870 on the Mountain of the Cross, north of Digne, though at the bottom of the slope. The brick walls are its main feature, with its large size. The chapel of Saint-Vincent belonged to an abbey or priory. It is still in good condition. The Chapel of the Cross, located nearby, is gradually becoming a ruin. There are numerous churches in the connected communes. In Courbons, the parish church is Notre-Dame-des-Anges (13th-14th century). It was dedicated to St. Clair in the 17th century. Its single nave consists of three arched barrel bays, and emerges into a square choir. There is also a chapel of