UNESCO Opera Director Panagiotis Karousos attended a Mass at Notre Dame in Paris

In February 2016 UNESCO Opera Director Panagiotis Karousos attended a Mass at Notre Dame in Paris.
The ceremony at the Paris Cathedral of Notre Dame was devout with local priests and catholic authorities.
Notre-Dame de Paris (French for "Our Lady of Paris"), also known as Notre-Dame Cathedral, is a historic Catholic cathedral on the eastern half of the Île de la Cité in the fourth arrondissement of Paris, France. The cathedral is widely considered to be one of the finest examples of French Gothic architecture, and it is among the largest and most well-known church buildings in the world. The naturalism of its sculptures and stained glass are in contrast with earlier Romanesque architecture.

As the cathedral of the Archdiocese of Paris, Notre-Dame is the parish that contains the cathedra, or official chair, of the Archbishop of Paris, currently Cardinal André Vingt-Trois. The cathedral treasury is notable for its reliquary which houses some of Catholicism's most important first-class relics including the purported Crown of Thorns, a fragment of the True Cross, and one of the Holy Nails.

The Notre-Dame de Paris was among the first buildings in the world to use the flying buttress. The building was not originally designed to include the flying buttresses around the choir and nave but after the construction began, the thinner walls grew ever higher and stress fractures began to occur as the walls pushed outward. In response, the cathedral's architects built supports around the outside walls, and later additions continued the pattern.

The coronation of Napoleon I on 2 December 1804 at Notre-Dame in an 1807 painting by Jacques-Louis David

UNESCO Opera Director Panagiotis Karousos attended a Mass at Notre Dame in Paris