A researcher discovered hidden messages called hieroglyphic cryptographies on the Luxor Obelisk in France. And he is still influencing history to this day—a researcher just discovered several hidden messages inscribed on one of the obelisks he commissioned. The monument in question is the Concorde (or Luxor) Obelisk , now located in Place de la Concorde, Paris, France. While some Egyptians would have been able to read hieroglyphs, only the elite would be able to decipher these hidden messages, Olette-Pelletier explained. Interestingly, the hidden messages on the “Seine side” (once the Nile side) of the obelisk could only be read at a 45° angle.