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Ollainville (French pronunciation: [ɔlɛ̃vil] ) is a commune in the Essonne department in Île-de-France in northern France.

The Battle of Saint-Denis was fought on 10 November 1567 between a Royalist army and Huguenot rebels during the second of the French Wars of Religion. Although their 74 year old commander, Anne de Montmorency, was killed in the fighting, the Royalists forced the rebels to withdraw, allowing them to claim victory. The only major conflict of the second phase, the battle came about when Montmorency attempted to break Condé's siege of Paris. The Huguenot army retreated towards the border, where they linked up with forces led by their ally John Casimir of the Palatinate-Simmern, before besieging Chartres in February 1568. The war ended shortly thereafter.

Boissy-sous-Saint-Yon (French pronunciation: [bwasi su sɛ̃.t‿jɔ̃] , literally Boissy under Saint-Yon) is a commune in the Essonne department in Île-de-France in northern France.

Arpajon ([aʁpaʒɔ̃] ) is a commune in the Essonne department in the Île-de-France region of northern France. The commune has been awarded three flowers by the National Council of Towns and Villages in Bloom in the Competition of cities and villages in Bloom.

Villiers-le-Bel – Gonesse – Arnouville is a railway station in Arnouville, Essonne, Île-de-France, France. The station was opened in 1859 and is on the Paris–Lille railway. The station is served by the RER Line D, which is operated by SNCF. The station serves the communes of Arnouville, to the north Villiers-le-Bel and, to the east, Gonesse.

The canton of Arpajon 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 Arpajon.It consists of the following communes:

Avrainville (French pronunciation: [avʁɛ̃vil] ) is a commune in the Essonne department in Île-de-France in northern France. Inhabitants are known as Avrainvillois.

Bruyères-le-Châtel (French pronunciation: [bʁɥijɛʁ lǝ ʃɑtɛl] ) is a commune in the Essonne department in Île-de-France in northern France.

La Norville (French pronunciation: [la nɔʁvil] ) is a commune in the Essonne department in Île-de-France in northern France.

Saint-Germain-lès-Arpajon (French pronunciation: [sɛ̃ ʒɛʁmɛ̃ lɛ.z‿aʁpaʒɔ̃] , literally Saint-Germain near Arpajon) is a commune in the Essonne department. It is a suburb of Paris located 30 km (19 mi) south of Paris via the N20, and 20 km (12 mi) north of Étampes.

Saint-Yon (French pronunciation: [sɛ̃.t‿jɔ̃] ) is a commune in the Essonne department in Île-de-France in northern France. Inhabitants of Saint-Yon are known as Saint-Yonais.

Autodrome de Montlhéry (established 4 October 1924) is a motor racing circuit, officially called L’autodrome de Linas-Montlhéry, owned by Utac, located south-west of the small town of Montlhéry about 30 km (19 mi) south of Paris.