The department of Doubs is located in the eastern part of France, specifically in the
Bourgogne-Franche-Comté region. It came into existence during the French Revolution in March 1790 and is part of the former province of Franche-Comté. The region is named after the Doubs River, and its prefecture is the beautiful city of Besançon. In addition, Montbéliard and Pontarlier are the sub-prefectures of this department. The population of Doubs speaks two distinct dialects, which have coexisted with the official language of French. The northern two-thirds of Doubs speak Franc-Comtois, a dialect of the langues d'oïl, while the southern third speaks a dialect of the Arpitan language. These languages were widely spoken in rural areas until the 20th century, although they are still spoken today, but not as commonly.
Doubs (department number 25) was considered a crucial gateway to Switzerland through the pass at Cluse de Pontarlier. Many famous people, including Mirabeau, Toussaint Louverture, and Heinrich von Kleist, have been imprisoned in the Château de Joux, which is a fortification in the region. Doubs is surrounded by the French departments of Jura, Haute-Saône, Territoire de Belfort, and the Swiss cantons of Vaud, Neuchâtel, and Jura. This department is also known for its picturesque natural beauty, historic landmarks, and cultural significance.