Wikipedia reports: "The source of the Seine is located on the plateau of Langres, 25 km north-west of Dijon in the Côte-d'Or department in the Bourgogne-Franche-Comté region, 470 m above sea level. A special feature is that the sources of the Seine were the property of the city of Paris from 1864 onwards. An artificial grotto was built a year later to protect the main source and a statue of a nymph was erected to symbolize the river. Paris has since returned the property to the region. Near the source are the remains of a Gallo-Roman temple in which a Dea Sequana (Latin goddess of the Seine) was worshipped. The archaeological finds from this are now in the archaeological department of the Musée des Beaux-Arts in Dijon."