A highly detailed 3D model of Notre-Dame de l'Assomption Cathedral in Clermont-Ferrand, France, built entirely in black volcanic stone (pierre de Volvic) with a dark, imposing Gothic appearance. Features include: twin 96-meter spires on the west facade, flying buttresses, large rose windows (blue on north, orange on south, 8.5m diameter), polygonal apse, 50m Tour de la Bayette on the transept, pointed arches, gargoyles, pinnacles, statues, and stained glass. Render in **cartoon cell-shading style**: bold black outlines, flat vibrant colors, sharp shadow edges, no gradients, anime/comic book aesthetic, clean and stylized like a 3D animated film.