This photo is from Chart Cathedral, which is located in the town of Chart, outside of Paris, France. Chart is actually larger than Notre Dame Cathedral in Paris, which were both built in the 13th and 14th Centuries. Chart was considered a gnostic initiation cathedral and actually has a pagan labyrinth on the floor as well as a black Madonna. I consider Chart, St. Maximin Cathedral in Saint-Maximin-la-Sainte-Baume, France, and Rosslyn Chapel in Edinburgh, Scotland, to be the most important gnostic historical sites in the world.