Puy-de-Dôme
In 1800, with the creation of the arrondissements in France, the eight districts were changed into five arrondissements: Ambert, Clermont-Ferrand, Issoire, Riom and Thiers. On 10 September 1926, the arrondissement of  Ambert was eliminated but, in 1942 Ambert became again an arrondissement of the department.