BOURBONNE-LES-BAINS, a watering-place of east France, department of Haute-Marne, east north-east of Langres. Pop. (1931) 2,773. Its hot saline springs (I o8 °-15o° F.) were known to the Romans under the name Aquae Borvonis. The waters are useful in skin troubles and rheumatism. The principal buildings are a 12th century church, the state bathing-establish ment and the military hospital (173 2) ; there are also the remains of a castle. Timber-sawing and plaster manufacture are carried on. In the neighbourhood are the buildings of the celebrated Cistercian abbey of Morimond.