Ghost stations of the Paris Métro

For historical or economical reasons, many stations on the Paris Métro have been made inaccessible and lie unused, conferring a sense of mystery over Parisians.

Two stations on the Paris Métro were constructed but never used, and have no way to be accessed by the public: Porte Molitor and Haxo.

Porte Molitor is a station constructed in 1923 on a linking of lines 9 and 10 and was originally intended to service the stadiums Parc des Princes and Roland Garros on the nights of matches.

[5] At the beginning of World War II, the French government put into action a plan that called for reduced service on the Métro network; specifically, it closed all but 85 stations.

[6][7] These stations were subject to abbreviated schedules: they closed at 8 PM on weekdays and Saturdays, and did not open on Sundays and holidays.

Outside of the flagstone pedestrian walks, which include a number of platforms and underground parking from the 1960s and 1970s, the Établissement public pour l'aménagement de la région de la Défense (EPAD) reserved two areas destined to hold two future Métro stations on the axis intended to be served by the line.

Instead, the crossing of the Seine was achieved by passing over the pont de Neuilly, and not in a tunnel as had previously been planned.

Thus, the two areas reserved for these stations are not serviced and remain accessible only via a trap door five floors below ground level in an underground parking lot.

The current line was realized in part by the number of lanes on the A14 autoroute, which were reduced to 2×2 instead of 3×3, as had previously been planned.

[10] Orly-Sud was conceived at the same time as the terminal, and was dug out under the building in preparation of a future expansion of the Métro to this location.