In the sixth stage of the Alchemical Voyage, with Patrick Burensteinas, alchemist and scientist, we enter into the mysterious laboratory where the Philosopher’s Stone has to be made. To help us to perceive its secrets, Nicolas Flamel, a famous Parisian alchemist from the middle age, would have mainly figured out the process of the Great Work under the arch of the Innocents cemetery in Paris. It was destroyed in the 18th century, with the entire cemetery. Thanks to many testimonials, we will make this arch alive again.