Rose windows in the context of "Gothic cathedrals and churches"

Rayonnant was a very refined style of Gothic Architecture which appeared in France in the 13th century. It was the defining style of the High Gothic period, and is often described as the high point of French Gothic architecture. French architects turned their attention from building cathedrals of greater size and height towards bringing greater light into the cathedral interiors and adding more extensive decoration. The architects made the vertical columns and supports thinner, made extensive use of pinnacles and moldings. They combined the triforium gallery and the clerestory into single space and filled it with stained glass. They made extensive use of moldings and bar tracery to decorate the exteriors and interiors.

The most prominent features of the Rayonnant style were the enormous rose windows installed in the transepts and facades, made possible by the use of bar tracery. The design of the windows gave the name Rayonnant ("Radiant") to the style.

Notre-Dame de Paris (French: Cathédrale Notre-Dame de Paris French: [nɔtʁ(ə) dam də paʁi] : "Cathedral of Our Lady of Paris"), often referred to simply as Notre-Dame, is a medieval Catholic cathedral on the Île de la Cité (an island in the River Seine), in the 4th arrondissement of Paris, France. It is the cathedral church of the Roman Catholic Archdiocese of Paris.

The cathedral, dedicated to the Virgin Mary ("Our Lady"), is considered one of the finest examples of French Gothic architecture. Several attributes set it apart from the earlier Romanesque style, including its pioneering use of the rib vault and flying buttress, its enormous and colourful rose windows, and the naturalism and abundance of its sculptural decoration. Notre-Dame is also exceptional for its three pipe organs (one historic) and its immense church bells.