Named after the parc des Buttes-Chaumont, right next to the station.
One theory says the hills were so bare – their marl and gypsum soil was useless for farming – that they were called the 'Mont Chauve' ('bald hill'), said to have been shortened to Chaumont. Another links the name to nuns known as the Filles de Saint-Chaumont. The engineer Adolphe Alphand created the park on the old gypsum quarries; it opened in 1867, under Napoleon III.