France, Beauvais, Cathedral of Saint-Pierre. Diagram of hemicycle, after Viollet-le-Duc. (Source: Columbia University, Dept. of Art History and Archaeology, slide Collection)
France, Beauvais, Cathedral
of Saint-Pierre. Diagram of hemicycle, after Viollet-le-Duc. (Source: Columbia
University, Dept. of Art History and Archaeology, slide Collection)