 The three main portals are the work of the architect Martin Chambiges.The cathedral escaped destruction during the French Revolution, but was de-Christianised and turned into a Temple of Abundance for several years.It is particularly noted for its exceptional stained-glass windows of dates from the 13th to the 19th century, with a surface area of 1,500 m², and for the magnificent treasury containing among many other important works the reliquary casket or shrine of Saint Bernard de Clairvaux and his closest friend Saint Malachy of Ireland.