Paris - the secret atlas

For those who thought they knew Paris, the City of Light, well, it still abounds with unusual and secret places that are entirely possible to visit.

Finding the sculpture of the goddess Isis on the façade of the Louvre Museum, deciphering alchemical symbols on Notre-Dame de Paris, scrutinizing the lyre turtles of the Opéra-Comique, climbing the majestic staircase of honor of the medical school, deciphering Masonic symbols in unexpected places, visiting a sublime hidden library, searching for the enigmatic star-shaped octahedron on the tomb of André Breton, admiring forgotten ceramics...