Orsay

The main home to the Paris-Saclay University. The university significantly shapes Orsay's economy as it employs about 10,000 academic workers. The city's economy is also centered on high technology, with several companies drawn to the area by the Paris-Saclay's research and development infrastructure. Seat of the Orsay campus of Paris-Saclay University, crossed by the 118 national road, Orsay has become a residential city of the Paris metropolitan area and the Chevreuse valley, easily accessible and with a preserved environment at the heart of the Paris-Saclay scientific cluster with laboratories of the CNRS and the Curie Institute on its territory.

• Name — Orsay • Commune Status — Commune • Arrondissement — Palaiseau • Canton — Palaiseau • Insee — 91471 • Postal Code — 91400 • Intercommunality — CA Paris-Saclay • Mayor — Rémi Darmon • Term — 2024–2026 • Area Km2 — 7.97 • Elevation M — 90 • Elevation Min M — 51 • Elevation Max M — 160

There has been a village called Orsay on this site since 999, and the first church there was built in 1157. From the sixteenth century, the town and surrounding area were owned by the Boucher family, and it was in honor of the family that Louis XIV gave the quai d'Orsay its name. This is the reason that the Musée d'Orsay is not in Orsay. In the eighteenth century, the family of Grimod du Fort bought the land and received the title of Comte d'Orsay. In 1870, during the Franco-Prussian war, Orsay was occupied by the Prussian army. 88 young "Orcéens" were killed in the First World War. In 1957, largely due to the influence of Frédéric and Irène Joliot-Curie, the Institut de physique nucléaire (nuclear physics institute) was opened in the Chevreuse valley, and the region, especially Orsay, became an important scientific centre. Another development was the creation of the University of Paris-Sud, whose most important faculty is the faculty of science. On 19 February 1977, a part of the territory of Orsay was detached and merged with a part of the territory of Bures-sur-Yvette to create the commune of Les Ulis.

Inhabitants of Orsay are known as Orcéens in French.

The Paris-Saclay University, former University of Paris in Orsay, dominates the city of Orsay, providing the city with its distinctive college-town character. University buildings are located in the north of the city and the campus is divided between several other cities such as Gif-sur-Yvette, Bures-sur-Yvette and Palaiseau. Colleges that are part of the Paris-Saclay University in Orsay: • ENS Paris-Saclay; • CentraleSupélec; • Paris-Saclay Faculty of Sciences; • Paris-Saclay Polytechnic School; • Orsay University Institute of Technology; • Paris-Saclay Undergraduate School.

Orsay is served by two stations on Paris RER line B: Le Guichet and Orsay-Ville.

• Le Guichet • Mondétour • Le Petit Madagascar • Corbeville • Le Moulon

• Bures-sur-Yvette • Gif-sur-Yvette • Saclay • Palaiseau • Villebon-sur-Yvette • Les Ulis

The territory of the city is divided in two catholic parishes which depend on the diocese of Évry–Corbeil-Essonnes and the deanery of Yvette-Gif-Orsay. The parish of Ulis-Montdétour-Montjay serves the neighborhood of Montdétour, bois du Roi and bois Persan, while the parish of Orsay serves the rest of the city. These parishes have the main church of Saint-Martin-Saint-Laurent, the chapel of la Clarté-Dieu and the chapel of Notre-Dame-de-la-Plaine at Mondétour. Additionally, the city has a Portuguese evangelical parish and an international evangelical church: the église évangélique vie et paix. A Buddhist Khuông Viêt pagoda is also located in the city.

• The Bois des Rames around the university campus • The Bois Persan • Parc botanique de Launay

• la Grande Bouvêche • la Pacaterie • le Temple de la Gloire • le château de Corbeville

• Adam Allouche, swimmer • Mickael Antoine-Curier, footballer • Moussa Badiane, basketball player • Guy Demel, footballer • Edward VIII of the United Kingdom, later Duke of Windsor after abdicating the throne and marrying American divorcee Wallis Simpson • Pierre-Gilles de Gennes, Nobel prizewinning physicist, died in Orsay • Sega Keita, footballer • Sir Oswald Mosley, Bt., leader of the British Union of Fascists • Lady Diana Mosley, one of the Mitford sisters and wife of Sir Oswald Mosley • Angelique Spincer, handball player • Teddy Venel, athlete • Wallis, Duchess of Windsor, American wife of Edward VIII of the United Kingdom