Notre-Dame de Paris, often referred to simply as Notre-Dame, is a medieval Catholic cathedral on the Île de la Cité, in the 4th arrondissement of Paris, France. The cathedral, dedicated to the Virgin Mary, 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 and its immense church bells.