Gare de Lyon in the context of "RER D"

Paris Métro Line 14 (French: Ligne 14 du métro de Paris) is one of the sixteen lines currently open on the Paris Métro. It connects Saint-Denis–Pleyel and Aéroport d'Orly on a northwest–southeast diagonal via the three major stations of Gare Saint-Lazare, the Châtelet–Les-Halles complex, and Gare de Lyon. The line goes through the centre of Paris and also serves the communes of Saint-Denis, Saint-Ouen-sur-Seine, Clichy, Le Kremlin-Bicêtre, Gentilly, Villejuif, Chevilly-Larue, L'Haÿ-les-Roses, Thiais and Paray-Vieille-Poste.

The first Paris Métro line built from scratch since the 1930s, line 14 has been operated completely automatically since its opening in 1998, and the very positive return of that experiment motivated the retrofitting of Line 1 for full automation. Before the start of its commercial service Line 14 was known as project Météor, an acronym for MÉTro Est-Ouest Rapide.

The Gare Saint-Lazare (French pronunciation: [ɡaʁ sɛ̃ lazaʁ]; lit. 'Saint Lazarus station'), officially Paris Saint Lazare, is one of the seven large mainline railway station terminals in Paris, France. It was the first railway station built in Paris, opening in 1837. It mostly serves train services to western suburbs, as well as intercity services toward Normandy using the Paris–Le Havre railway. Saint-Lazare is the third busiest station in France, after the Gare du Nord and Gare de Lyon. It handles 290,000 passengers each day. The current station building opened in 1889 and was designed by architect Juste Lisch; the maître d'œuvre (general contractor) was Eugène Flachat.

The 12th arrondissement of Paris (XII arrondissement) is one of the 20 arrondissements of the capital city of France. Situated on the right bank of the River Seine, it is the easternmost arrondissement of Paris, as well as the largest by area. In 2019, it had a population of 139,297.

The 12th arrondissement comprises the Gare de Lyon and Bois de Vincennes. It borders the inner suburbs of Charenton-le-Pont and Saint-Mandé in Val-de-Marne.