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Origin and history

The South Spotlight, also known as the Observatory's Spotlight, is a geodetic monument located in the Parc Montsouris at 2 rue Gazan in the 14th arrondissement of Paris. Although associated with the meridian of Paris, it is actually about 70 meters east of its exact route. This 4 metre high stele, surmounted by an openworked cylinder, bears a partial inscription dating from 1806, where Napoleon's name was erased.

Originally, the sight was erected in 1806 in the garden of the Observatoire de Paris to serve as a pillar of the meridian. It was later moved to its current location in Montsouris Park, created under the Second Empire. The monument, classified as a historical monument in 1928, bears witness to the geodetic work carried out in the early 19th century to accurately map the French territory.

The inscription engraved on the stele, "DU REGNE DE ... MIRE DE L'OBSERVATORIE - MDCCCVI", reveals its link with the First Empire and its scientific role. Although its practical usefulness has diminished with the evolution of measurement techniques, the focus remains a symbolic vestige of efforts to define national geographical references, in addition to the northern focus in Montmartre.

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