Communauté d'agglomération Val Parisis

Beauchamp (French pronunciation: [boʃɑ̃] ) is a commune in the Val-d'Oise department in Île-de-France in northern France.

Montigny–Beauchamp is a station between Montigny-lès-Cormeilles and Beauchamp, in the northwestern suburbs of Paris. It is served by Transilien regional trains from Paris to Pontoise, and by RER rapid transit.

Bessancourt is a railway station in the commune of Bessancourt (Val-d'Oise department), France. The station is served by Transilien H trains from Paris to Persan-Beaumont via Saint-Leu-la-Forêt. The daily number of passengers was between 500 and 2,500 in 2002. Bessancourt is located on the line from Ermont-Eaubonne to Valmondois, that was opened in 1876. The line was electrified in 1970.

Montigny-lès-Cormeilles (French pronunciation: [mɔ̃tiɲi lɛ kɔʁmɛj] (listen), literally Montigny near Cormeilles) is a commune in Val d'Oise, in the northwestern suburbs of Paris, France. It is located 19.0 km (11.8 mi) from the center of Paris.

Frépillon is a railway station in the commune of Frépillon (Val-d'Oise department), France. The station is served by Transilien H trains from Paris to Persan-Beaumont via Saint-Leu-la-Forêt. The daily number of passengers was less than 500 in 2002. Frépillon is located on the line from Ermont-Eaubonne to Valmondois, that was opened in 1876. The line was electrified in 1970.

Taverny Air Base (formerly Base Aérienne 921 "Frères Mahé" de Taverny) (ICAO: LFPJ) is located in the communities of Taverny and Bessancourt in the Val d'Oise département of France, twenty kilometers north of Paris. Until 2011 it was the headquarters of the French Air Force nuclear strike force, with an underground command center.The base is divided into three tiers with an area of approximately 15 hectares: The first tier is underground in a former gypsum quarry beneath the Forest of Montmorency. The facility comprised the hardened command facility for the French Air Force. The second tier is on the surface, and provided support services for the underground command center. The third tier is at the top of the hill, with facilities for secure military communications.There were no aviation facilities apart from a heliport.

The canton of Taverny is an administrative division of the Val-d'Oise 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 Taverny.It consists of the following communes: Beauchamp Bessancourt Pierrelaye Taverny

Bessancourt (French pronunciation: [bɛsɑ̃kuʁ] ) is a commune in the Val-d'Oise department in Île-de-France in northern France. Bessancourt station has rail connections to Persan, Saint-Leu-la-Forêt and Paris.

Taverny is a railway station located in the commune of Taverny (Val-d'Oise department), France. The station is served by Transilien H trains, on the line from Paris to Persan-Beaumont via Saint-Leu-la-Forêt. The daily number of passengers was between 500 and 2,500 in 2002. Taverny is located on the line from Ermont-Eaubonne to Valmondois, that was opened in 1876. The line was electrified in 1970.

Frépillon (French pronunciation: [fʁepijɔ̃] ) is a commune in the Val-d'Oise department and Île-de-France region of France. Frépillon station has rail connections to Persan, Saint-Leu-la-Forêt and Paris.

The canton of Herblay-sur-Seine (before 2021: Herblay) is an administrative division of the Val-d'Oise 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 Herblay-sur-Seine.It consists of the following communes: La Frette-sur-Seine Herblay-sur-Seine Montigny-lès-Cormeilles

Pierrelaye is a railway station in the town of Pierrelaye, a northwestern suburb of Paris, France. It is served by Transilien regional trains from Paris to Pontoise, and by RER rapid transit.