|Intercommunality||Pays d'Alésia et de la Seine|
|Elevation||354–523 m (1,161–1,716 ft)|
|Land area1||16.41 km2 (6.34 sq mi)|
|- Density||3 /km2 (7.8 /sq mi)|
|INSEE/Postal code||21551/ 21690|
|1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km² (0.386 sq mi or 247 acres) and river estuaries.|
|2 Population without double counting: residents of multiple communes (e.g., students and military personnel) only counted once.|
Source-Seine is located 30 kilometres (19 mi) northwest of Dijon.
True to its name, within Source-Seine is the source of the Seine River. The Seine rises at an elevation of 470 metres (1,542 ft) in a wooded area, marked by signs along the N71 road. Several ditches comprise the source of the Seine, France's second-longest river (the Loire is the longest), which flows 776 kilometres (482 mi) into the English Channel.
What is now Source-Seine saw Gaulic pilgrimage beginning in the 1st century BC. In the late 4th century AD, Roman Emperor Theodosius I ordered the closure of pagan temples at the Seine's source and gave their property to Christian institutions. In accordance with this edict, in the 5th century the abbey of Sainte-Marie-de-Cestra, the closest religious institution to the Seine's source, received a donation from the Roman government.
In the 17th century, rumors of healing powers in the Seine were circulating around Paris. This led to the construction of a grotto dedicated to the Seine Nymph and financed by its residents in the 19th century. The city of Paris officially bought the source of the Seine in 1864. Modern times have seen a wave of coin throwers flocking to the river's source.
The area around Source-Seine is noted for its wine.
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