Rouen Cathedral, built on an old Romanesque church, shows the apogee of Flamboyant Gothic architecture. The monument displays every stage of the Gothic style, from the primitive of the 12th century to the classic (1190-1230), of which only a few parts have remained after the fire of 1200. The Flamboyant Gothic of the 15th and 16th centuries is visible on the Tour de Beurre (Butter Tower), 246 ft (75 m) high, so named because it was financed with money from indulgences dispensed for not fasting during Lent. Its yellow limestone from Saint-Leu allowed all fantasies to the sculptors. The tracery follows the shape of flames while the gables rise and are adorned with an extremely flowery style.