The tour is a product of a very long and detailed research, conducted by a PhD scholar, that was done for the purposes of mobile app Notre Dame Fiat Lux. This research will also be published in the form of a book. Therefore, our guides who partook in this research (most of them) or have prepared the tour from it, are arguably and very likely the foremost experts on Notre Dame in Paris, France, and indeed the world. The tour is a comprehensive view on the cathedral and its many different aspects. We offer a rare synthesis of research, over ten years of guiding experience, and most importantly, honest, deep and ever expanding love for this jewel of Gothic architecture. We feel that Notre Dame is the very pinnacle of Western civilization, and we are eager to explain why that is so. Come share our passion and ever growing interest for this unique monument.