Jean-Marie , Maurice , Benoît-Joseph , Étienne , Marcel , Denis , Anne-Geneviève , Gabriel and Bourdon Marie The cathedral has ten bells . The bourdon , called Emmanuel , weighing at 13 tons and tuned to F sharp , has been an accompaniment to some of France 's major historical events since its first 15th-century casting , such as the coronation of French kings , papal visits , and the end of conflicts such as World War I and World War II . It also rings in times of sorrow like for the funerals of the French heads of state , tragedies such as the terrorist attacks on 11 September 2001 , and on special holidays like Christmas , Easter , and Ascension . It was recast at the request of King Louis XIV in 1681 , and managed to escape the events of the 1789 French Revolution . According to bell ringers and musicians , it is still one of the most beautiful sound vessels and one of the most remarkable of its kind in Europe
terrorist attacks on 11 September 2001
September 11 attacks
Notre-Dame de Paris