linguistic:translation, structural:reformatting
Rayonnant Gothic and Decorated Style

Rayonnant Gothic maximized the coverage of stained glass windows such that the walls are effectively entirely glazed; examples are the nave of Saint-Denis (1231–) and the royal chapel of Louis IX of France on the Île de la Cité in the Seine – the Sainte-Chapelle (c.1241–1248). The high and thin walls of French Rayonnant Gothic allowed by the flying buttresses enabled increasingly ambitious expanses of glass and decorated tracery, reinforced with ironwork. Shortly after Saint-Denis, in the 1250s, Louis IX commissioned the rebuilt transepts and enormous rose windows of Notre-Dame de Paris (1250s for the north transept, 1258 for the beginning of south transept). This first 'international style' was also used in the clerestory of Metz Cathedral (c. 1245–), then in the choir of Cologne 's cathedral (c. 1250–), and again in the nave of the cathedral at Strasbourg (c. 1250–). Masons elaborated a series of tracery patterns for windows – from the basic geometrical to the reticulated and the curvilinear – which had superseded the lancet window. Bar-tracery of the curvilinear, flowing, and reticulated types distinguish Second Pointed style.

Decorated Gothic similarly sought to emphasize the windows, but excelled in the ornamentation of their tracery. Churches with features of this style include Westminster Abbey (1245–), the cathedrals at Lichfield (after 1257–) and Exeter (1275–), Bath Abbey (1298–), and the retro choir at Wells Cathedral (c.1320–).

The Rayonnant developed its second 'international style' with increasingly autonomous and sharp-edged tracery mouldings apparent in the cathedral at Clermont-Ferrand (1248–), the papal collegiate church at Troyes, Saint-Urbain (1262–), and the west façade of Strasbourg Cathedral (1276–1439)). By 1300, there were examples influenced by Strasbourg in the cathedrals of Limoges (1273–), Regensburg (c. 1275–), and in the cathedral nave at York (1292–).