The cathedral of Beauvais derived directly from Amiens, and no expression of the Gothic principle was ever carried farther. It consists of a mammoth choir and transept. As the height of the edifice is three times its width, the nave which now is lacking would need to have been of enormous length. Instead of that much-needed nave, there nestles under the truncated west end a modest little Carolingian edifice called the Basse-Œuvre, built by the fortieth bishop of Beauvais, Hervé (987-998). The small cubic stones and occasional courses of brick tell of the antiquity of this, the best-preserved monument in France, dating before the year 1000.[140] Most of the Romanesque churches of the Oise copied it. Scarcely, however, had the Ile-de-France Picard Romanesque school developed than the privileged region gave birth to the national art.

In 1227 Beauvais planned a new cathedral, spurred on thereto by the magnificent nave rising in neighboring Amiens. But the works were not started till 1247, for the bishop, more a feudal baron than a pastor, was for a time entirely engrossed in mercenary wars in Italy and in quarreling with Blanche of Castile, the queen-regent. Finally Bishop Milon began his cathedral in Beauvais on a scale beyond the resources of the diocese. Despite his own and the chapter’s generous donations, and the exemption of workmen and all building material from taxes, the choir was not finished till 1272, two years after the choir of Cologne. Scarcely was it done when, in 1284, its upper vaulting fell; a few years earlier a partial collapse had occurred. To remedy the disaster new piers had to be inserted between the old ones, which explains the sharp-pointed arches of the pier arcade. Only in the ambulatory, which was untouched by the falling masonry, is the original vaulting to be found. The required addition of flying buttresses was no improvement to the symmetry of the exterior. Instead of being able to proceed to the erection of a nave, forty years were wasted in repairs.

Then came the calamities of the Hundred Years’ War when building activities flagged all over France. Never again were profiles to be virile. The apogee hour of Gothic was forever past. With English, Burgundian, and French troops roving the country, Beauvais was kept on the alert. In 1429, the citizens, roused by Jeanne d’Arc’s success at Orléans, expelled their bishop, who was in sympathy with the foe, and was none other than the unworthy Pierre Cauchon, soon to sit as miscreant judge at the Maid’s trial in Rouen. Two years after Jeanne had been burned, Beauvais was besieged by English troops, and so gallant was the behavior of the women of the city, notably Jeanne Hachette, that forever after was accorded to them the right to march in the place of honor in all processions, directly behind the clergy. When the Duke of Burgundy, England’s ally, besieged the city in 1472 he burned the episcopal palace, to which the two sturdy towers near the Basse-Œuvre originally belonged. Once more the women of Beauvais fought side by side with the men, while the children and the aged gathered in the cathedrals to supplicate Heaven for protection.

No city in the land had better cause to rejoice over peace and the invader’s expulsion than Beauvais. And nowhere did Flamboyant Gothic take on nobler expression than in the stately transept now added to the cathedral, a masterpiece worthy to be joined to the giant choir. On its north front worked Martin Chambiges, who gave to Troyes and Sens their admirable façades. Over-ornamentation was a pitfall for the late-Gothic masters, but not for Chambiges, who kept Beauvais’ strong lines of construction unobliterated by lavish detail.

Flamboyant Gothic was essentially a decorative art. Therein only did it differ from preceding schools, for it developed no new principles of construction. Because of the flamelike undulations of its window tracery, the Norman archæologist, M. de Caumont, who had brought into use the name Romanesque, invented the equally useful term Flamboyant.[141] Capricious, overladen, disturbingly restless, this final phase of the national art may often be (it has been called more terrestrial than celestial), it was inclined to exhibit its technical dexterity; but none the less it was keenly alive and a vast improvement on the over-formalized geometric Rayonnant Gothic to which it succeeded. In both, the profiles were prismatic, fluid, and weak. Discipline which made for robustness was forever lost.

A century before the characteristics of Flamboyant art developed in France, they were in use in England, and there called Curvilinear or Decorated Gothic. Window mullions undulated, arches were crowned with reversed curves and sculptured finials, secondary, connecting ribs were added to the vaulting, bases were elongated, there were interpenetrating molds, hanging keystones, piers without capitals, and such new models for foliate sculpture as the deeply indented leaves of parsley and curly cabbage. When capitals were given up, the ribs died away weakly in the piers. The Gothic of England had changed to its cold Perpendicular phase by the time that the architects across the Channel adopted the features called Flamboyant in France.

M. Camille Enlart has developed the idea that the last phase of the national architecture was a product of the English occupation during the Hundred Years’ War, that from elements of decoration introduced by England, the French composed a style which differed somewhat only from that in vogue across the Channel from 1300 to 1360. In France, flowing tracery and ogee arches were not used before 1375. France need feel no diminution of her claim of leadership in Gothic architecture because she adopted, for her XV-century traits, certain decorative details developed first by others, since the Gothic of England was originally of French derivation.

The theory of an English origin for French Flamboyancy is contested by M. Anthyme Saint-Paul, who thought that from the same elements of XIII-century Gothic one country developed its own Curvilinear style and the other its own, Flamboyant Gothic.[142] M. de Lasteyrie agreed with the thesis that there is a French origin for French late-Gothic manifestations. That Flamboyant art is in part indigenous and partly of foreign derivation is probably nearest the truth. Certainly sporadic cases of florid features appeared in French art during the XIII and XIV centuries, but it is clear that in various places long held by the English there appeared the first or the fullest expression of late-Gothic art.

Before the Flamboyant Gothic transept of Beauvais was finished, the foreign Renaissance had arrived in France. And it showed here in the richly sculptured doors. The sibyls, all ten of whom are represented, are, as pagans, kept outside the church. With skilled gradation the carving grows deeper and bolder toward the top of the doors, farthest away from the eye. Jean Le Pot carved the southern doors in faultless taste. He was a glassmaker as well, and in St. Étienne’s church are his windows beside those of his father-in-law, Engrand Le Prince, who, with his sons Jean and Nicholas, made the north and south rose windows of the cathedral and its splendid Peter and Paul window. Their tree of Jesse, in St. Étienne’s choir, is considered a masterpiece of color and design. To-day a Le Prince window in any French city is a matter of civic pride.

The old saying ran: “The choir of Beauvais, the nave of Amiens, the portals of Rheims, the towers of Chartres” make the most beautiful cathedral in the world. One hundred and fifty feet high curve the upper vaults of Beauvais choir. Beneath them could be set the belfries of Notre Dame of Paris. As at Bourges, the lofty aisle possesses its own triforium and clearstory, but here the clearstory of the central choir has not been dwarfed as a result of the stupendous pier arcades. Beauvais dared to make its upper windows eighty feet high. Think what its interior would be had it retained the original stained glass! Its towering choir windows would scintillate like those of Sainte-Chapelle, since it was the Paris school that supplied XIII-century Beauvais.