The Notre-Dame-de-l'Assomption Cathedral of Clermont is a Gothic cathedral located in Clermont-Ferrand. It was built from 1248 in the center of the city of Clermont, the historic capital of Auvergne. It replaced a Romanesque cathedral located on the same location which itself had been preceded by two other Christian sanctuaries. Its initial patronage is that of Saint-Vital and Saint-Agricol. Most of the current construction dates from the second half of the 13th century, it is the first example of the use of Volvic stone in architecture. The western facade and other renovations were carried out by Eugène Viollet-le-Duc during the second half of the 19th century.
The construction of the current Notre-Dame-de-l'Assomption cathedral began in 1248, under the leadership of the architect Jean Deschamps and the episcopate of Hughes de La Tour. It stands on the site of previous churches as evidenced by the crypt. It took 7 centuries to complete, with long construction interruptions. It was Viollet-le-Duc, in the 19th century, who built the 3 bays, the portal and the west spiers. It is characterized by the use of lava stone, of which this is the first large-scale use. Overall, the cathedral is inspired by the radiant Gothic style of Ile de France. It is the setting for a unique set of stained glass windows, including Romanesque lancets, and wall paintings.