Arcueil–Cachan (Paris RER)

École supérieure d'ingénieurs des travaux de la construction de Paris (ESITC Paris) a French engineering College created in 1992. Through a 5-year course and subjects related to construction, ESITC Paris trains future works engineers who can work both in the field and in management offices. Located in Arcueil, the ESITC Paris is a private higher education institution of general interest recognised by the State. The school is a member of the Union of Independent Grandes Écoles (UGEI).

Cachan (French pronunciation: [kaʃɑ̃] (listen)) is a commune in the southern suburbs of Paris, France. It is located 6.7 km (4.2 mi) from the center of Paris. The prestigious École normale supérieure Paris-Saclay and École Spéciale des Travaux Publics are located there.

Bagneux station (French: Gare de Bagneux) is a station on the line B of the Réseau Express Régional, a hybrid suburban commuter and rapid transit line. The station takes its name from its location near the city of Bagneux, Hauts-de-Seine, but the station itself is inside the town of Cachan.

Laplace is a station on the line B of the Réseau Express Régional, a hybrid suburban commuter and rapid transit line. It is located in the city of Arcueil.

The canton of Cachan is an administrative division of the Val-de-Marne department, Île-de-France region, northern France. Its borders were modified at the French canton reorganisation which came into effect in March 2015. Its seat is in Cachan.It consists of the following communes: Arcueil Cachan

The École normale supérieure Paris-Saclay (also ENS Paris-Saclay or Normale Sup' Paris-Saclay), formerly ENS Cachan, is a grande école and a constituent member of Paris-Saclay University. It was established in 1892. It is located in Gif-sur-Yvette within the Essonne department near Paris, Île-de-France, France. ENS Paris-Saclay is one of the most prestigious and selective French grandes écoles. Like all other grandes écoles, this elite higher education institution is not included in the mainstream framework of the French public universities. Along with the École normale supérieure (Paris), ENS Lyon and ENS Rennes, the school belongs to the informal network of French écoles normales supérieures, forming the top level of research and education in the French higher educational system. In 2014, ENS Paris-Saclay became a founding member of the Paris-Saclay University, an initiative to integrate and combine resources from a number of different grandes écoles, public universities, and research institutions. The school moved in 2019 to a new campus located in the commune of Gif-sur-Yvette on the Saclay plateau, France's "Silicon Valley," where it will be near other members of the Paris-Saclay research-intensive and business cluster.

Arcueil (French pronunciation: [aʁkœj] (listen)) is a commune in the Val-de-Marne department in the southern suburbs of Paris, France. It is located 5.3 km (3.3 mi) from the center of Paris.

Bagneux–Lucie Aubrac (French pronunciation: ​[baɲø lysi obʁak]) is a Paris Métro station in Bagneux, Hauts-de-Seine. It is the southern terminus of Line 4, and was built as part of a two-station southward extension from Mairie de Montrouge, the previous terminus of the line. The adjacent station is Barbara. The station opened in January 2022. In future, the station will be served by Paris Métro Line 15.

Barbara (French pronunciation: ​[baʁbaʁa]) is a station of the Paris Métro on Line 4 in Montrouge and Bagneux. The station was built as part of a two-station southward extension from Mairie de Montrouge to Bagneux–Lucie Aubrac. It opened in January 2022.

Bagneux (French pronunciation: [baɲø] (listen)) is a commune in the Hauts-de-Seine department, in the southern suburbs of Paris, France. It is located 7.7 km (4.8 mi) from the center of Paris.

The Sid Ahmed Ghlam case (French: Affaire Sid Ahmed Ghlam) concerns the April 2015 murder of Aurélie Châtelain and planning of an Islamic terrorist attack against a church in Villejuif, France, by an Algerian national, Sid Ahmed Ghlam. In November 2020, he was sentenced to life in prison by a Paris court. This sentence was upheld on appeal in October 2021. Ghlam had made journeys to Syria in October 2014 and February 2015. There, on at least one occasion he had met Abdelhamid Abaaoud, one of the terrorists who perpetrated the November 2015 Paris attacks.

Montrouge (French pronunciation: [mɔ̃ʁuʒ] (listen)) is a commune in the southern Parisian suburbs, located 4.4 km (2.7 mi) from the centre of Paris. It is one of the most densely populated municipalities in Europe. After a long period of decline, the population has increased again in recent years.