Jouars-Pontchartrain is a commune in the Yvelines department in the Île-de-France region in north-central France. It is approximately 35 kilometres from Paris. This city is famous for the Château de Pontchartrain.

Geography

The town of Jouars-Pontchartrain is located 35 km west of Paris, 18 km west of Versailles and 22 km from Rambouillet, on a buttress which delimits the western end of the plain of Versailles and at the foot from which begins the plain of Montfort-l'Amaury. Its territory is irrigated by the Mauldre whose south-north oriented course follows the eastern limit of the town and receives in the park of the Château de Pontchartrain the Élancourt brook, a diversion of which feeds its pond. This brook, oriented east-west, is enlarged a little upstream by the Maurepas brook which joins it at Chennevières.

Hamlets of the municipality

The commune comprises seven hamlets: The last two hamlets form a kind of enclave between the municipal territories of Maurepas, Coignières, Saint-Rémy-l'Honoré and Le Tremblay-sur-Mauldre.

Population

Monuments

The farm of the Ithe, located on the banks of the Mauldre and to the west of the hamlet of Jouars corresponds to an ancient Gallo-Roman settlement called Diodurum or Divo durum, one of the largest secondary settlements recorded in Île-de-France. This site, prospected since the middle of the 20th century. The data show that it occupies an area of approximately 40 ha. The recognized chronological sequence, from the beginning of the 1st century BC to the 5th-6th centuries, and the very good preservation of the archaeological levels associated with a humid context make it an exceptional site. The settlement developed in the valley of La Mauldre, at the crossroads of several roads leading to other Gallo-Roman settlements: Le Vieil-Évreux, Dreux, Chartres, Orléans, Sens, Paris, Beauvais. It is a vicus as attested by a fragment of an inscription. As a large crossroad located on the borders of the territory of the Carnutes, near Belgian Gaul and possessing pre-urban characteristics, this vicus is one of the assumptions for the consecrated place of the druids assembly mentioned by Caesar.

Twin towns