The church is 137 m in length under 33 m high
vaults. The central crossing is surmounted by an unusual lantern-style tower similar to that at
Ely Cathedral in
England. The tower was completed in the
Flamboyant style. The well-preserved
stained glass of the
nave dates to the 15th and 16th centuries, and features jewel tones among panels of clear and frosted white glass. These materials allow more light to filter into the nave, creating a brighter interior than is typical of
Gothic churches. Despite the use of Flamboyant tracery in the
aisles,
triforium, and
clerestory, the nave maintains a conservative appearance through the use of
compound piers, trumpet bases, and
capitals which helps maintain harmony throughout the edifice. The west façade was never completed during the
Middle Ages. The present structure was constructed between 1846 and 1851 in a
Neo-Gothic style that bears little resemblance to the original Late Gothic designs. File:Abbatiale Saint-Ouen de Rouen - Portail des Marmousets - 1.jpg|The
Portail des Marmousets after restoration. File:Abbatiale Saint-Ouen de Rouen - Portail des Marmousets - Statue de Saint Ouen.jpg|Statue of
Saint Owen on the trumeau of the
Portail des Marmousets after restoration. File:Abbatiale Saint-Ouen de Rouen - Tour sur la croisée du transept - gros plan.jpg|The Crossing Tower. File:St. Ouen, Rouen, France, 1910. (2787320269).jpg File:St. Ouen, Rouen, France, 1910. (2787322649).jpg File:St. Ouen, Rouen, France, 1910. (2788174178).jpg File:St. Ouen, Rouen, France, 1910. (2788174286).jpg File:St. Ouen, Rouen, France, 1910(?). (2788175980).jpg File:St. Ouen, Rouen, France, n.d.. (2787320553).jpg File:St. Ouen, Rouen, France, n.d.. (2787320663).jpg File:St. Ouen, Rouen, France, n.d.. (2788174684).jpg File:St. Ouen, Rouen, France, n.d.. (2788174728).jpg File:St. Ouen, Rouen, France, n.d.. (2788174600).jpg File:Sant-Ouen de Rouen.jpg == Organ ==