La Frette-sur-Seine

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

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.

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.

Cormeilles-en-Parisis (French pronunciation: [kɔʁmɛj ɑ̃ paʁizi] (listen), literally Cormeilles in Parisis) is a commune in the Val-d'Oise department in Île-de-France in Northern France. Inhabitants are called Cormeillais(e).

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.

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

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 Château de Maisons (now Château de Maisons-Laffitte), designed by François Mansart from 1630 to 1651, is a prime example of French baroque architecture and a reference point in the history of French architecture. The château is located in Maisons-Laffitte, a northwestern suburb of Paris, in the department of Yvelines, Île-de-France.

The International School of France, or Ermitage, is an international day and boarding school in Maisons-Laffitte, just outside Paris, France. The school, which was founded in 1941 by a woman seeking to improve conditions of students during World War II, offers an English bilingual education up to French Baccalaureate / International Baccalaureate (IB) level. This is a day school with 5- and 7-day boarding houses. Ermitage focuses on children with different backgrounds from all around the world, not just France. In 2009, the school began offering the IB Diploma Programme. In 2018 the school was also authorised to offer the IB Middle Years Programme. The school is headed by Benjamin Hunter. Enrollment was 1100 students in 2012. Student ages range from 21/2 (TPS) through 19 (Terminale, equivalent to Year 13 in Great Britain or grade 12 in the US).

The canton of Sartrouville 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 Sartrouville.It consists of the following communes: Maisons-Laffitte Le Mesnil-le-Roi Sartrouville

Sartrouville (French: [saʁtʁuvil] (listen)) is a commune in the Yvelines department in the Île-de-France in north-central France. it is located in the north-western suburbs of Paris, 17.1 km (10.6 mi) from the center of Paris.

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