Starring the professor of religious iconography and expert in symbolism Robert Langdon, Brown once again recalls the conduct of the Catholic Church in a critical key.
But the Roseline was not his invention, since already in the 60s of the XX century the mythography of the modern Priory of Sion – a heretical association of which important historical figures who shared an interest in the occult were the “Great Masters”, such as Isaac Newton, Leonardo Da Vinci, Sandro Botticelli and Victor Hugo.
Also known as the meridian of Paris or meridian 0, the Roseline perfectly cuts the French capital in two parts, passing through the center from the Paris Observatory where the circumference of the Earth was calculated with a very close accuracy. The meridian was later replaced in 1884 by the British Greenwich meridian.
It, as mentioned in Brown’s book, also passes through the church of Saint Sulspice, located in the lively Parisian district of Saint German.
The monument is crossed by a brass line embedded in the floor, which precisely defines the meridian.
According to the Prieure de Sion, the Templar’s aim was to protect the ‘Holy Grail’, or the tomb of Marie Magdalene, who according to some historical findings would have moved to France, where the royal lineage is presumed to have grown. In the book, the grave of the Magdalene is located under a medallion near the Louvre museum, in fact, in the final scene of the film that was made on Brown’s book, Langdon kneels on this medallion as if to pay homage to the Holy Grail.
The Roseline, between history and myth, doesn’t need precise data but symbolic images and powerful archetypes that stimulate the observer to knowledge, thus passing on its mystical legend.