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Concept
Les Ulis
Summary
Les Ulis (le.z‿ylis) is a commune in the Essonne department located in the southwestern suburbs (banlieue) of Paris, France. It is from the centre of Paris.
Les Ulis is a new town located in the Île-de-France, in the south-west of the Parisian agglomeration and in the north-west of the Essonne department. It sits on the Courtabœuf plateau which dominates the Yvette valley, also known as the Chevreuse valley. It is 23 km to the south-west of central Paris, 20 km north-west of Évry and 14 km to the south-east of Versailles.
The town is laid out in the form of a U, approximately three kilometres by two kilometres, and covers 680 hectares. Over 65% of the area is built-up, 17% is semi-rural and 16% is either rural or comprises communal green space. The French Institut Géographique National gives the co-ordinates of the town as 48°40'56" N and 02°10'03" E at the central point.
The source of the minor river Rouillon (river) is in the neighbouring town of Villejust, close to the communal border. The lowest point of the town, at the point where it meets Bures-sur-Yvette, is at an altitude of 87m. Most of the town is situated at an average altitude of over 150m. Its highest point is at 170m. The land on which it is built consists of clay, sand and millstone.
The town is divided into distinct neighbourhoods by the main roads running through it. To the east is a large industrial zone. To the west is the residential area, a large part of which consists of 33 HLM tower blocks, grouped into four neighbourhoods.
The town was conceived and built in the 1970s according to the precepts of Le Corbusier by architects Robert Camelot, François Prieur and Georges-Henri Pingusson. Its tower blocks are raised on slabs so that they are accessed above street level by means of pedestrian walkways. The town incorporates a large urban park, to the north.
Line B of the RER runs through the Chevreuse and local bus services give access to the train stations at Orsay and Bures-sur-Yvette.
Les Ulis finds itself at a significant meeting point of motorways.
Official source
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