Notre Dame de Paris (French for Our Lady of Paris), also known as Notre Dame Cathedral, is a Gothic, Roman Catholic cathedral on the eastern half of the Île de la Cité in the fourth arrondissement of Paris, France. It is the cathedral of the Catholic Archdiocese of Paris: that is, it is the church that contains the cathedra (official chair) of the Archbishop of Paris. The cathedral treasury houses a reliquary with the purported Crown of Thorns.
Notre Dame de Paris is widely considered one of the finest examples of French Gothic architecture in France and in Europe, and the naturalism of its sculptures and stained glass are in contrast with earlier Romanesque architecture. The first period of construction from 1163 into 1240s coincided with the musical experiments of the Notre Dame school.