Hôtel de Ville, Les Ulis

Les Ulis (French pronunciation: [le.z‿ylis] ) is a commune in the Essonne department located in the southwestern suburbs (banlieue) of Paris, France. It is 23 km (14 mi) from the centre of Paris.

The canton of Les Ulis is an administrative division of the Essonne 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 Les Ulis.It consists of the following communes: Gometz-le-Châtel Marcoussis Nozay Saint-Jean-de-Beauregard Les Ulis Villebon-sur-Yvette Villejust

Saint-Jean-de-Beauregard (French pronunciation: [sɛ̃ ʒɑ̃ də boʁ(ə)ɡaʁ] ) is a commune in the Essonne department in Île-de-France in northern France. Inhabitants of Saint-Jean-de-Beauregard are known as Bellinagardinois.

The Institut des hautes études scientifiques (IHÉS; English: Institute of Advanced Scientific Studies) is a French research institute supporting advanced research in mathematics and theoretical physics. It is located in Bures-sur-Yvette, just south of Paris. It is an independently governed research institute and a founding member of the University of Paris-Saclay.

Bures-sur-Yvette station is one of the two RER B station of Bures-sur-Yvette, near Paris, in France. This station is used to access University of Paris-Sud, and Institut des Hautes Études Scientifiques.

Bures-sur-Yvette (French pronunciation: [byʁ syʁ ivɛt] , lit. "Bures-on-Yvette") is a commune in the Essonne department in the Île-de-France region in Northern France. It is a southern Parisian outer suburb in the Vallée de Chevreuse, with a population of 9,254 as of 2021.

The Institut d'astrophysique spatiale (IAS; English: Institute of Space Astrophysics) is a French research institute supporting advanced research in aerospace and astrophysics. It is located in Orsay, just south of Paris. It is a public research institute in a partnership with the University of Paris-Saclay.

The Vaularon is a small river in southern Île-de-France (France), left tributary of the Yvette, in Bures-sur-Yvette, which is a tributary of the Orge and then the Seine. Its source is in Gometz-le-Chatel, in the Essonne department. It is 3.8 km (2.4 mi) long.

The Parc botanique de Launay (90 hectares), sometimes known as the Parc botanique d'Orsay or the Parc de l'Université Paris XI, is a botanical garden located on the Université Paris-Sud XI campus at 3 rue Georges-Clemenceau, Orsay, Essonne, Île-de-France, France, and open daily; admission is free.

Orsay-Ville station (French: Gare d'Orsay-Ville) is a RER B station in the town of Orsay, near Paris, in France. This is one of the stations for University of Paris-Sud.

La Hacquinière stations is one of the two RER B stations of Bures-sur-Yvette, near Paris, in France. It is also the name of a district of this town.

Orsay (French pronunciation: [ɔʁsɛ] ) is a commune in the Essonne department in Île-de-France in northern France. It is located in the southwestern suburbs of Paris, France, 20.7 km (12.9 mi) from the centre of Paris. A fortified location of the Chevreuse valley since the 8th century and agricultural domain of wealthy and influential people, the development of Orsay is marked by the introduction of a railroad in the second half of the 18th century (today the RER B of which two stations are located in Orsay) and donations which allow the construction of a hospital still active to this day. Orsay is 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.