Paris Métro Line 13 in the context of "Paris Métro Line 7"

Paris Métro Line 12 (French: Ligne 12 du métro de Paris : initially opened as Ligne A du Nord-Sud (North-South Line A)) is one of the sixteen lines currently open on the Paris Métro. It links Issy-les-Moulineaux, a suburban town southwest of Paris, to Aubervilliers, in the northeast. With around 54 million passengers per year, Line 12 was the twelfth busiest line of the network in 2021. It services several major stops, such as Porte de Versailles, Concorde, Madeleine, and two national railway stations, Gare Montparnasse and Gare Saint-Lazare. The service runs every day of the week, and the line uses MF 67 series trains, the network's standard since the early 1970s.

Line 12 was founded in 1905 as Line A by the Nord-Sud Company, who also built Line 13. It was built between 1905 and 1910, to connect the districts of Montparnasse, in the south, and Montmartre, in the north of the French capital. The first trip, from Porte de Versailles to Notre-Dame-de-Lorette, was on 5 November 1910. The line was the second to be built on the north–south axis of the city, in competition with Line 4 of the Compagnie du chemin de fer métropolitain de Paris (CMP; Paris Metropolitan Railway Company). It was extended bit by bit until 1934 when it reached Mairie d'Issy in the south. Tunnelling to the northern terminus at the Porte de la Chapelle on the perimeter of Paris had been completed in 1916. In 1930, the CMP bought the failing Nord-Sud company and Line A was integrated into the new, unified network as Line 12. In 1949, the CMP was itself merged into the RATP, Paris's public transport company, which still operates the line today.

Paris Métro Line 11 (French: Ligne 11 du métro de Paris) is one of the sixteen currently open lines of the Paris Métro. It links Châtelet to Rosny–Bois-Perrier in Rosny-sous-Bois, in the neighboring department of Seine-Saint-Denis. Opened in 1935, line 11 was one of the last historical lines to be put into service, even after the first parts of lines 12 and 13. It was then intended to replace the Belleville funicular tramway, which closed in 1924. The line is 11.7 km (7.3 mi) in length with 19 stations.

Before its 2024 extension east from Mairie des Lilas, it was one of the least used lines, with less than forty million passengers in 2023, and also ran the oldest trains still in service, the MP 59. The RATP expects thirty-one million more in 2025 after the eastbound expansion.

Opéra (French: [ɔpeʁa] ) is a station on Lines 3, 7 and 8 of the Paris Métro. It is named after the nearby Opéra Garnier. Located at the end of the Avenue de l'Opéra, it serves the district of Boulevard Haussmann. Its main entrances are located on the Place de l'Opéra, built in a marble design (instead of the characteristic iron metro entrances of Hector Guimard), to not spoil the view of the opera house.

The station is connected by an underground passage to Auber on RER A. From Auber, additional stations and lines can be reached via a sequence of underground passages, namely Havre–Caumartin for Line 3 and Line 9, and Haussmann–Saint-Lazare for RER E, the latter being connected to Saint-Lazare for Line 3, Line 12, Line 13 and Line 14, and the latter in turn being connected to Saint-Augustin for Line 9.

The MF 67 (French: Métro Fer appel d'offres de 1967; English: Steel-wheeled metro ordered in 1967) is a fleet of steel-wheel electric multiple unit trains for the Paris Métro. The first MF 67 trains entered service on Line 3 in June 1968, and became one of the biggest orders for the Métro, with 1,482 cars constructed. The need to replace the Sprague-Thomson fleet, as well as increasing costs associated with the later-cancelled plan to introduce rubber-tyred trains on all Métro lines, were the main factors for the size of the order.

At its peak, during the late-1980s and the early-1990s, the MF 67 operated on eight of the (then) fifteen Métro lines (Lines 2, 3 and 3bis, 5, 7bis, 9, 10 and 12): the MF 67 also operated on Lines 7, 8 and 13 (including the old Line 14), all before the introduction of the MF 77 in 1978.

Invalides station (French pronunciation: [ɛ̃valid] ) is a station on Line 8 and Line 13 of the Paris Métro, as well as a station on RER C. Located in the 7th arrondissement, it is situated near and named after Les Invalides, although La Tour-Maubourg (Line 8) and Varenne (Line 13) are closer to the building.

Varenne (French pronunciation: [vaʁɛn]) is a station on Line 13 of the Paris Métro. Located in the 7th arrondissement, it is named after the nearby Rue de Varenne.