The Paris Meridian Line

.

.

My strolls do follow an invisible thread in the steps of photograph Atget, comparing old  Paris with today.  
For these set of new strolls, I have added an other imaginary red thread, walking in the steps of François Arago, along the Paris Meridian Line.
The exercise is not that difficult though. All across Paris, there are bronze medallions, dotted along the precise line between the north and south of Paris. They were originally placed in 1994 by Dutch artist, Jan Dibbetts to honor French scientist François Arago.
Let's cross Paris, from the south to the north, following these medallions or at least their identified location since many of them might be gone since 1994.

  • The first stroll starts from the Cité Universitaire and crosses the Parc Montsouris.

  • The second stroll starts with the Paris Observatory, which was built symmetrically on the Meridian line used for a long time by French sailors, from 1667 to 1911, until its replacement by the Greenwich meridian.
    It ends with the Church of Saint Sulpice. Its gnomon became famous with Da Vinci Code by Dan Brown, although it is simply an astronomical instrument to calculate the date of Easter.

  • The third tangents Louvre's pyramid, an other location with occult theories.

  • The last one goes up to Montmartre where the North obelisk in the garden of the Moulin de la Galette is the counterpart of the South obelisk in the Montsouris park.