Argenteuil is a commune in the northwestern suburbs of Paris, France. It is located 12.3 km from the center of Paris. Argenteuil is a sub-prefecture of the Val-d'Oise department, the seat of the arrondissement of Argenteuil. From Wikipedia
The rare public exhibition, held every fifty years, opens at the Basilica of Saint-Denys with high-ranking clergy presiding and 400,000 pilgrims expected.
