Cormeilles-en-Parisis

The Fort de Cormeilles-en-Parisis was constructed between 1874 and 1877 as part of a new plan for the defense of Paris developed by General Raymond Adolphe Séré de Rivières, near the town of Cormeilles-en-Parisis. During the Franco-Prussian War, German troops had used the hill upon which the fort sits as a spotting and firing location, ideal for the siting of new rifled guns whose range was increased over old-fashioned smooth-bore guns. These weapons could attack Paris from Cormeilles, so a new outer ring of forts had to be built outside the first ring of forts built in 1840–1860 to deny the area to enemy gunners. The Séré de Rivières system was designed as a response to these technological innovations, and to the loss of French territories in Alsace and Lorraine.

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.

La Frette-sur-Seine (French pronunciation: [la fʁɛt syʁ sɛn] (listen), literally La Frette on Seine) is a commune in the Val-d'Oise department in Île-de-France in northern France.

The canton of Franconville 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 Franconville.It consists of the following communes: Cormeilles-en-Parisis Franconville

Franconville (French pronunciation: [fʁɑ̃kɔ̃vil] (listen)) is a commune in the Val-d'Oise department in Île-de-France in northern France. It is a northwestern suburb of Paris, located 17.1 km. (10.6 miles) from the center of Paris.

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.

The Hippodrome de Maisons-Laffitte at 1 avenue de la Pelouse in the northwestern Parisian suburb of Maisons-Laffitte in France was a turf horse racing facility and track for Thoroughbred flat racing. Opened in 1878 by Joseph Oller, inventor of the pari-mutuel machine, it sits on 92 hectares that belonged to the wealthy banker Jacques Laffitte. The nearby Château de Maisons-Laffitte is home to The Museum of the Racehorse. In November 2018 France Galop announced that the racecourse would close at the end of 2019 due to financial pressures on the organisation. The final meeting was held on 29th October 2019. Despite the efforts of local government officials there are no plans to re-open the track and the racing surface has been allowed fall into disrepair.The racecourse layout was unique as it was one of the few courses in the world that staged both left- and right-handed races. It also featured a 2,000-metre straight track, one of the longest in Europe and three different winning posts.From early March through to the end of November, the major annual Conditions races at Hippodrome de Maisons-Laffitte were: Prix Eugène Adam Prix Robert Papin Prix Messidor La Coupe de Maisons-Laffitte Prix Eclipse Prix de Seine-et-Oise Critérium de Maisons-Laffitte Prix Miesque

Herblay-sur-Seine (French pronunciation: [ɛʁblɛ syʁ sɛn], lit. "Herblay-on-Seine"; before 2018: Herblay) is a commune in the Val-d'Oise department in the Île-de-France region in Northern France. It is located 20.2 km (12.6 mi) from the centre of Paris, in its northwestern outer suburbs, on the departmental border with Yvelines. It is twinned with Yeovil, England.

Franconville – Le Plessis-Bouchard is a station in Franconville, a northwestern suburb of Paris, France. It is served by Transilien regional trains from Paris to Pontoise, and by RER rapid transit.

The canton of Argenteuil-1 is an administrative division of the Val-d'Oise department, Île-de-France region, northern France. It was created at the French canton reorganisation which came into effect in March 2015. Its seat is in Argenteuil.It consists of the following communes: Argenteuil (partly) Saint-Gratien SannoisThe current departmental councilors for Argenteuil-1 are: Marie-Evelyne Christin, Sannois city councilor, former Sannois departmental councilor, Val-d’Oise departmental council vice-president. Philippe Metezeau, Argenteuil city councilor, former Eastern Argenteuil departmental councilor, Val-d’Oise departmental council vice-president.

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

The canton of Houilles is an administrative division of the Yvelines department, northern France. Its borders were modified at the French canton reorganisation which came into effect in March 2015. Its seat is in Houilles.It consists of the following communes: Carrières-sur-Seine Houilles Montesson