Rayonnant style (rā`ənănt), the middle period (c.1240–1350) of French Gothic architecture Gothic architecture and art, structures (largely cathedrals and churches) and works of art first created in France in the 12th cent. that spread throughout Western Europe through the 15th cent., and in some locations into the 16th cent.
..... Click the link for more information. , so termed from the characteristic radiating tracery of the rose window rose window, large, stone-traceried, circular window of medieval churches. Romanesque churches of both England and the Continent had made use of the wheel window—a circular window ornamented by shafts radiating from a small center circle; and from this
..... Click the link for more information. . In this period many of the great cathedrals were under construction; the builders became bolder and more proficient, emphasizing in every way the vertical elements of the structure. Light and soaring structural skeletons were erected, reducing the size of all supporting members; the enlargement of windows resulted in a drastic reduction of wall surfaces. Bar tracery tracery, bands or bars of stone, wood, or other material, either subdividing an opening or standing in relief against a wall and forming an ornamental pattern of solid members and open spaces.
..... Click the link for more information. , displaying elaborate geometrical patterns, supplanted plate tracery. Sculptural ornament turned to greater naturalism and was used more generously. Of this period are the cathedral at Amiens (begun 1220), the Sainte-Chapelle at Paris (1243–46), and the earlier portions of St. Ouen at Rouen (begun 1318). The Rayonnant style spread to other parts of Europe. The scheme was employed in the cathedrals at Cologne, Germany (begun 1248), and Leon, Spain (begun c.1255).

Rayonnant style

French style (13th century) that represents the height of Gothic architecture. During this period architects became less interested in achieving great size than in decoration, which took such forms as pinnacles, moldings, and especially window tracery. The style's name reflects the radiating character of the rose window. Other features include the thinning of vertical supporting members, the enlargement of windows, and the combination of the triforium gallery and clerestory into one large glazed area, until walls became largely undifferentiated screens of tracery, mullions, and glass. Amiens Cathedral (1220–70) is cited as its earliest manifestation. Especially fine achievements include Notre-Dame de Paris, the church of Saint-Urbain in Troyes (founded 1262), and the extraordinary Sainte-Chapelle, Paris (consecrated 1248), Louis IX's palace chapel. See also cathedral.