luxury real estate for sale Morigny-Champigny, France

EXCLUSIVE in ESSONNE. Magnificent loft in Etampes with 750m2 of living space built on a 1684m2 plot. Formerly a rehabilitated warehouse, close to the Saclay plateau and Etampes RER C station. Tastefully furnished with top-of-the-range materials. Industrial-contemporary loft style, comprising: First floor: entrance hall, study, dining room, fully equipped open-plan kitchen with access to the terrace and garden, laundry room and storeroom. A large reception room overlooking the heated pool and jacuzzi. Upstairs: 4 suites, including a master with dressing room, 70m2 bathroom with shower. Garden level: gym with shower. Lounge-library, bar with fitted counter, games room, glazed vaulted cellar and home cinema. Outside: workshop with water point, machine room. Garage for 2 vehicles and 2 motorcycles. Covered outdoor parking for 2 vehicles with electric hook-up. Landscaped garden, summer terrace with pergola and paved courtyard. 45 minutes from Porte de Gentilly and 9 minutes from the train station, shops and schools.

Nestled in a green setting 42 km south-west of Paris, in a protected environment, this 1960s property was extended in 1991 by the current owner. He also built a swimming pool and tennis court. The house offers approx. 425 m² of living space on two levels. On the first floor, in the old part, the entrance hall distributes an office space with open fireplace, a median hallway, a billiard room, a bedroom and a shower room. On the first floor, in the new section, there's a laundry room, the kitchen, a corridor/storage area, a dining room, a living room with an open fireplace and a dais. On the second floor, in the old part, there are three bedrooms, a staircase hallway, a games room, a bathroom and a hallway with cupboards. On the second floor, in the new part, there are three bedrooms, a dressing room, a corridor with mezzanine and a bathroom with a shower. A full basement of approx. 190 m² provides access to 2 separate cellars, the pool's equipment room and a large garage (with motorized sectional door) for up to 6 cars. A 1-car carport is also located outside this garage. The house is surrounded by terraces. It has a well that feeds a 750-litre water tank. There's also a second, independent, heated garage with motorized doors, measuring 36 m². The south-facing 11 m x 5 m pool features integrated balneotherapy and a brand-new heat pump. The tennis court was redone and repainted 3 years ago. This very peaceful house is only a five-minute drive away from all commodities, from the RER C Etrechy and the N20 motorway. Property presented by Vickie Nikolaou +33 6 14 15 48 93 Real Estate Agent EI Energy class D - Climate class C. Estimated annual energy expenditure for standard use: €5,606 to €7,584 (average energy prices indexed on 1 January 2021, including subscriptions). Estimated annual energy costs for standard use: €5,606 to €7,584 (average energy prices indexed to January 1, 2021, including subscriptions). Information on the risks to which this property is exposed is available on the Géorisques website: www.georisques.gouv.fr

It is in a charming village, 40 kilometers southwest of Paris and close to all amenities, that this house of approximately 170 sqm with modern and classic lines is nestled. Dating from the 2020s, this house is located on a plot of 890 sqm, protected from all eyes and complete with a swimming pool. A double living room with generous volumes, finds its originality through its different levels and materials used (parquet flooring and old tiles). A wood stove and large openings opening onto a terrace provide a warm and bucolic atmosphere. As an extension, an open fitted and equipped kitchen adjoins a laundry room giving access to the garden. This ground floor also has a master suite with dressing room, bathroom and toilets, tastefully decorated. A few steps higher, there is a large open room, its functions can be multiple: work space, gym, artist's studio, relaxation lounge with library... Furthermore, this first floor is made up of three bedrooms, a bathroom and separate toilets. This perfectly maintained family home will appeal to a family or anyone looking for a green countryside close to shops, train station and schools. Primary school in the town. Daycares, primary and secondary schools in Etrechy (8 mins). High schools in Etampes (16 mins), Jeanne d'Arc institution (from kindergarten to final year) in Etampes. RER C station in Etrechy, (Etrechy/Paris Austerlitz in 45 mins) Orly Airport (38 mins) Energy class C 128, Climate class A 4. Estimated average amount of annual energy expenditure for standard use, established from prices of energy for the year 2021: between EUR1,410 and EUR1,950. Information on the risks to which this property is exposed is available on the Géorisks website: www.georisks.gouv.fr

A characterful 18th-century house to be restored with a 1,500m² garden, an hour away from Paris. The property is hidden behind a large covered entrance made of wood and framed in stone rectangles in relief. The house adjoins another one on one side. The edifice was built at the end of the 17th century and the start of the 18th century. It faces a closed courtyard on its west side. Its three sections form a U shape with a double-size central section set back with a raised ground floor. At the end of its two wings, there are two separate pavilions, one of which extends the edifice with a shelter. A ground floor and a first floor can clearly be seen in the court-facing facade, which is being restored and is made of rubble stone with rendering. A mansard roof, partly covered in slate tiles, crowns the edifice. Second-floor dormers dot this roof on both sides: one dormer faces the court and three face the garden. At each level, the elevations are punctuated with evenly spaced windows with large panes in old frames. At the foot of the garden-facing elevation, there is a raised paved terrace via which you enter the house on this side. Lastly, at one edge of the plot, there is a stone lean-to that has been turned into an outbuilding. It is a remnant of a former wash house beside a false river running through the property.

I HAVE THE PLEASURE TO OFFER THIS MAGNIFICENT PROPERTY FOR SALE. THIS STONE RESIDENCE MEASURES 300 M2 OF LIVING SURFACE AND DEVELOPS GENEROUS VOLUMES. ITS LIVING ROOM OF 56 M2 WELCOME YOU WITH A MAGNIFICENT FIREPLACE, 6 BEDROOMS IN TOTAL INCLUDING ONE ON THE GROUND FLOOR WHICH ALLOWS LIVING ON ONE LEVEL. YOUR FRIENDS WILL BE ABLE TO ENJOY AN INDEPENDENT WING ON THE FLOOR WITH 2 OR 3 BEDROOMS AND BATHROOM. THIS HOUSE IS EXTREMELY WELL MAINTAINED, HOWEVER WORK IS REQUIRED FOR A MORE CONTEMPORARY TOUCH. IN ANNEXES YOU WILL FIND A GARAGE WITH ITS ATTIC, A COURT FOR TWO VEHICLES AS WELL AS A Vaulted CELLAR AND ALSO A WOODEN CHALET. THE LAND OF 8950 IS CROSSED AND BORDERED BY TWO COURSES OF WATER. THE BOTTOM IS ENTIRELY WOODED, YOU WILL NOT LACK OF WOOD DURING THE WINTER. I REMAIN AT YOUR DISPOSAL FOR ANY ADDITIONAL INFORMATION AND TO ORGANIZE A VISIT. EXPERTIMO est le leader français des réseaux dédiés aux mandataires expérimentés

- VERY ELEGANT CHÂTEAU FROM THE 18TH AND 19TH CENTURIES - 20 ROOMS - 70KM FROM PARIS - TO FINISH INTERIORLY DEVELOPMENT - 4 INDEPENDENT HOUSES - LARGE OUTBUILDINGS - SOUTH OF ETAMPES LOIRET-ESSONNE. 70km from Paris in an enclosed park of 14 hectares without any nuisance, this very attractive property offers a human-sized castle with typically 18th century architecture facing south, as well as numerous partly furnished outbuildings. The castle has undergone a major work campaign in recent years, the structural work is in perfect condition, facades cleaned and repointed, new roofs, double-glazed wooden windows. One house has been completely restored, three others are habitable. The interior of the castle, which has been completely restored, retains many charming old elements. Facing the very beautiful perspective of 100 meters long, past the large gate and the wolf jumps, the north facade is revealed with four majestic pavilions with four-sided roofs. The south facade presents a very elegant symmetrical architecture of a small 18th century castle adjoining two sloping wings under Mansard-style roofs. Facing a clear perspective in the woods. Inside the castle, on the ground floor, through hall, two double-facing lounges, corridors, two beautiful 19th century staircases, dining room, old chapel, two lounges, kitchen. On the first and second floor, possibility of creating 8/10 bedrooms. The castle has been completely restored externally since 2018, facades cleaned and repointed, new roofs, double-glazed wooden windows. The interior of the castle is to be completely restored, it presents many charming old elements, marble fireplaces, moldings, herringbone floors, elegantly shaped staircases. With numerous full-length French doors on all sides. The outbuildings consist of four independent habitable houses, including one in the recently restored old orangery. Two large barns, three large garages. Two small pavilions. A new tennis court. Stabilized parking. In total around 20 rooms. Two accesses. Romantic park of 13.2 hectares enclosed and free, meadows, woods, very beautiful trees. Situation : - 69km from Paris. - 22km from Etampes, RER station, Paris 30 minutes. All shops and services. - 14km from Pithiviers, train station, Paris 43 minutes. All shops and services. Price: 1,780,000 Euros fees included (agency fees payable by the seller). Information on the risks to which this property is exposed is available on the Géorisques website: www.georisques.gouv.fr

EXPERTIMO est le leader français des réseaux dédiés aux mandataires expérimentés

An elegant 18th century chateau and its neo-Romanesque indoor chapel in the Essonne valley, 35 km south-east of Paris. The present chateau was re-built in a classical 18th century style on the foundations of an older castle around 1850. Past the entrance gate leading directly to the main courtyard with a central circular lawn, the chateau comes into view. At the rear of the chateau, parklands planted with centuries-old trees provide the backdrop for a pastoral scene that stretches as far as the river.

Abriculteurs offers you this house located in Étréchy, Rue Voltaire, with a charming garden of 410 m².Main Features:- Area: 136 m²- Number of rooms: 5Upper Ground Floor:- Spacious living room- Kitchen- 2 bedrooms- 1 shower room on the second floorGarden Level:- A large room opening onto the garden- 2 bedrooms- 1 bathroomHighlights:- 410 m² garden- 8-minute walk to the train station with line C, connecting to Paris Austerlitz in 30 minutes- Nursery and primary school 400 meters away on foot- College 10 minutes by bike- Nearby shops accessible by foot- Solar roller shutters- Double glazing - tilt-and-turnAdditional Information:- Heating: Gas boiler, changed in 2017- Energy Performance Certificate: DInformation on the risks to which this property is exposed is available on the Géorisques website: www.georisques.gouv.frInterested? Contact Abriculteurs to visit this property.This description has been automatically translated from French.

I have the pleasure to exclusively present to you a comfortable house of 2018, Located in the town of Etréchy, in Essonne just 50kms south of Paris. Of traditional construction and meeting RT2012 standards, of the 'Low consumption building' type, an orientation intended for energy saving both in summer and in winter. The house is composed of an individual entrance opening onto a large, bright and through living room of 37m2, with a sliding bay allowing access to the terrace and the garden, An open, fitted and equipped kitchen, in the extension a laundry room and garage, you can also enjoy a bedroom with shower on the ground floor. Upstairs a landing, 3 large bedrooms and a bathroom. Courtyard side a beautiful space that can accommodate several vehicles, garden side a large terrace and a quiet garden area. Etréchy is a dynamic and sought-after town, in particular for the quality of life that reigns there 'Small town in the countryside', with around fifty shops, schools from kindergarten to college, means of transport, several bus lines and its train station. RER C, access to national road 20, many cultural and sports associations. Do not hesitate to contact me for more information and visit. EXPERTIMO est le leader français des réseaux dédiés aux mandataires expérimentés

Beautiful 19th century Maison de Maître in local stone on two levels and two annexes. The main house combines two adjoining former houses facing an inner courtyard and the garden. The upper house has four levels. The lower house has three levels. The Upper House has a street façade and a courtyard façade facing a large chestnut tree, which is in the process of being listed. It has a basement with two cellars, water heaters, a water softener and two lift pumps. The ground floor features an entrance to the garden, two adjoining rooms and a shower room. The first floor features a large landing leading to two bedrooms, a bathroom and a walk-in closet. The second floor comprises a bedroom with bathroom and a bedroom with shower room. The Lower House comprises an entrance onto the garden, a kitchen, a vast double living-dining room with a large three-sided fireplace and a bay window overlooking the garden. A staircase leads to a mezzanine study. The first floor features a landing with numerous cupboards leading to two bedrooms and two en suite bathrooms. A large attic, lit by three velux windows, has been converted into a bedroom and games room with bathroom. Two outbuildings complete the ensemble. They face the main house on either side of a courtyard. The first, on two levels, needs renovation. The ground floor comprises a garage/workshop, a boiler room and the kitchen of a living area. The first floor offers two adjoining bedrooms and a bathroom. The second outbuilding, on the ground floor overlooking the garden, features a room with windows and two large velux windows, serving as an office/living room with sleeping area and a shower room. A terrace, tiled with Comblanchien flagstones, runs the length of the Maison de Maître and back to the garden, where a large bay window opens. The garden and its banks of the Juine River boast many species of trees and fruit trees. A large portico and petanque court invite you to relax. The recently renovated swimming pool measures 12 m x 6 m. It is heated by a heat pump and covered by a roller shutter and a removable inflatable dome. A pool-house with shower and two cabins, plus a gazebo with summer dining area with kitchen, are ideal for enjoying fine weather. Garden sheds with three storage rooms complete the ensemble. Abundant firewood. Public schools (nursery and elementary) in Janville-sur-Juine. Private schools (nursery and elementary) in Lardy 850 m away (12-minute walk). nstitution Jeanne d'Arc in Étampes (kindergarten to senior high school) 20 minutes away by car. Shops within a five-minute walk (pharmacy, G20, bakery, tea room, hairdresser and florist). Shopping malls 15 minutes away by car. Lardy RER C station 1.4 km (5-minute drive or 20-minute walk). Paris-Austerlitz connection at 45 minutes every 30 minutes. With agency fees: € 750,000 Excluding agency fees: € 715,000 Agency fees 4.90% payable by purchaser. Energy Class G - Climate Class G. Estimated annual energy costs for standard use: €8 040 to €10 930 (average energy prices indexed to January 1, 2021, including subscriptions). Excessive energy consumption. This property is presented by Vickie Nikolaou : +33(0)6 14 15 48 93 - Agent commercial E.I. Information on the risks to which this property is exposed is available on the Géorisques website: www.georisques.gouv.fr

Located near Lardy in Essonne, just an hour from Paris, this property will satisfy even the most demanding of tastes. Secluded away in an utterly peaceful setting, the main house presents modern levels of comfort and magnificent period elements (terracotta and stone floors, parquet floors, fireplace, solid wood doors, open beams, stone staircase, local tiles, etc.). On the ground floor, the reception facilities include a living room with fireplace, a dining room, a kitchen and an indoor swimming pool. Upstairs, you will find the master suite with its ensuite bathroom, as well as four additional bedrooms and a second bathroom. The land of just over 3 hectares has been beautifully landscaped and presents an attractive blend of different tree species, as well as the former caretaker's lodge.

It is 52 kilometers southwest of Paris, in a bucolic environment crossed by the Juine, that this bourgeois property of 290 sqm displays all its elegance. Built on a green plot of approximately 2500 sqm with direct access to the river, this residence dating from 1870 is a family living space, ready to write a new history. A few steps up and once you have passed the steps, you are welcomed via a corridor allowing communication between all the living rooms. The house has retained many marks of its authenticity: high ceilings, parquet floors, cement tiles, bases, moldings, rosettes and fireplaces. This level includes a large living room with through light, a dining room adjoining the kitchen opening onto a large reception room (the result of an extension dating from 2018). The staircase, the central point of the house, takes us to the upper floor with three bedrooms, a bathroom with a shower and a landing room with wardrobe. The top floor reveals three new bedrooms with a more rustic charm, an office/library and a bathroom. A fully furnished basement offers a laundry room, a cellar, a pantry, two fully tiled rooms, one of which opens onto the terrace (it could be used as a liberal profession, gym or independent studio). A wooded and landscaped garden seems to establish this pretty residence in a picturesque setting: here and there, a vegetable garden, a gazebo, elegant molehills, hydrangeas and rose bushes, a superb greenhouse and to complete the whole, the river and its soothing effects. A courtyard and a garage allow parking for several vehicles. The natural environment, the enhancement and conservation of the original materials make this house a suitable place to live for people wishing to make a unique and peaceful space their own. Kindergarten and elementary on site. Middle school in Lardy (3 minutes by car) and high schools in Etampes (20 minutes by bus or car) and Arpajon (20 minutes by bus or car). Jeanne d'Arc Institution in Etampes (from nursery to final year) Shops on site. SNCF station in Lardy - Paris Austerlitz in 45 minutes (RER C) ENERGY CLASS: C 147 / CLIMATE CLASS D 34: Estimated average amount of annual energy expenditure for standard use, established from energy prices on January 1 2021: EUR2478. Information on the risks to which this property is exposed is available on the Géorisks website: www.georisks.gouv.fr

Nestled in complete intimacy, quiet, in a green setting sheltered from prying eyes, in the heart of one of the typical and charming villages of Essonne, D'Huison-Longueville, less than 4 km from the La Ferté-Alais train station, a very beautiful character property with 8 rooms and 227 m² of living space built on a plot of 1277 m², consisting of a main house with its tower and outbuildings, completely rehabilitated and renovated in 2004. The entrance to the property is through a porch with an automated wooden gate, leading to a beautiful paved courtyard distributing the buildings and the parking area. The main stone house, with a living area of 192 m² developed over two levels, comprises on the ground floor an entrance and an independent toilet, a large cathedral living room with an exceptional ceiling height of 7 meters, a dining room opening onto a south-facing terrace, an open-plan, furnished and equipped kitchen, a small intimate salon in the rotunda of the tower, a summer dining room opening onto the garden and benefiting from a wash basin supplied by a stream. On the first floor, distributed by a mezzanine corridor, a large master bedroom of 25 m² with a shower room and toilet, two other attic bedrooms of 10 and 20 m², a large bathroom with toilet and an office in the tower. Possibility to create a bedroom and its shower room on the ground floor. The first outbuilding for residential use, with a total area of 45 m² over two levels, consists on the ground floor of a living space with an open kitchen and a shower room with toilet. The second level offers a beautiful attic bedroom. This outbuilding can be rented with the possibility of creating an independent access. The second outbuilding houses technical rooms such as the laundry room, boiler room, cellar, and workshop. This charming residence offers quality amenities, combining comfort and noble materials: flat tile roofing, natural wood joinery, country stone facade, double-glazed wooden windows, tiling, solid oak flooring, exposed stones and beams, underfloor heating, flat, wooded and landscaped garden enclosed by stone walls. The garden opening onto the countryside is adorned with a small bridge overlooking the stream, adding an extra charm to this unique ensemble. Peaceful environment, a true haven of peace and serenity. Virtual visit available upon request. We inform you that in accordance with Article L.561-5 of the Monetary and Financial Code, an identity document will be required before each visit.This description has been automatically translated from French.

Chalo Saint Mars (91), traditional house in a protected natural setting, bordered by the Marette River. In the heart of the village, on a wooded plot of 2 ha, this property comprises a 195 m² stone house on two levels, a 65 m² single-storey guest house and several outbuildings. A 12x6 swimming pool with terrace and summer lounge complete the ensemble. First floor: cathedral living room with mezzanine, second living room, dining room and fitted kitchen with direct access to the terrace overlooking the pool and grounds. The master suite with its Delft porcelain-tiled shower room. Second floor: three bedrooms, an office and a bathroom. Dovecote, workshop, wine cellar, two recreation rooms, orchard, small vegetable garden, two-car carport and, via a second entrance, a one-car garage. Possibility of parking several cars on the property. Near RER C Etampes, Paris Austerlitz in 30 minutes. Old world charm, a protected natural area and peace and quiet are the keywords of this beautiful property. A haven of peace in the center of a charming village. Property presented by Vickie Nikolaou, Agent Commercial EI. +33 6 14 15 48 93. Energy class F - Climate class E. Estimated annual energy costs for standard use: €4,370 to €5,970 (average energy prices indexed to January 1, 2021, including subscriptions). Housing with excessive energy consumption. Information on the risks to which this property is exposed is available on the Géorisques website: www.georisques.gouv.fr

Exclusive: 40 km from Paris, here is a beautiful residence that has been perfectly maintained over time. Ideally located in the center of a small town, it benefits from local shops on foot. This building with a surface area of approximately 415 m² on the ground, is composed as follows: On the ground floor, you enter via an entrance which serves on the left a large living room and its charming fireplace, a high-end kitchen and its back kitchen, and a large dining room. Then, in the extension, you discover a winter garden and an office space with access to the terrace and swimming pool. Still on the ground floor and to the right of the entrance, you access the night areas composed of 4 large bedrooms, one of which has a surface area of almost 40 m². Then, we access the floor via a large staircase that takes us to a hallway distributing 3 large bedrooms (with view of the garden and swimming pool) and two large dressing rooms. We can enjoy an interesting basement, composed of a large room of 30 m², a sauna, a shower, a garage of almost 40 m² and a real wine cellar of 16 m². This building is built on a pleasant garden of approximately 1500 m², entirely enclosed by walls. +++ You can enjoy its pleasant heated swimming pool! +++ All in a quiet and city center! Note: A video is available and will be sent, on request, after an initial telephone interview. Sextant France - Fabrice Lambert - 06 83 91 16 81 - More information on www.sextantfrance.fr ref. 24021

It is in the heart of a hamlet crossed by La Chalouette, just 50 kilometers southwest of Paris, that this elegant 159 sqm apartment is nestled (Carrez law). This peaceful place to live is located in an 18th century castle, built on 2 hectares punctuated with century-old trees. The ground floor opens onto a warm reception room serving as a cloakroom with an oak staircase. Higher up, on a half landing, a library bedroom, in soft shades of almond green, announces the authenticity of the place with its herringbone parquet flooring, its marble fireplace and its interior shutters. The first floor is made up of a landing serving toilets and a large living room of 45sqm, entirely covered with tiles. Bathed in light thanks to the presence of large openings on either side, this living/dining room offers the privilege of a time of rest by the fire, as well as the conviviality of a large table. In the corner of the building is a parquet floored kitchen, equipped with large storage cupboards and with a breathtaking view of the park. The top floor under the attic serves two sleeping rooms with rustic charm, one of which has a mezzanine. An office, a bathroom, toilets and a small attic complete this level. The natural environment, the enhancement and conservation of the original materials make this apartment a suitable place to live for people wishing to make a place full of singularity their own. Small co-ownership of 5 lots (no procedure in progress) The common areas of the entire co-ownership are: Parking spaces, a meeting room, a games room, the laundry, a cellar, the dovecote and a barn . Monthly charges: EUR650 including: Water, electricity, heating, property tax, insurance. Nursery and primary schools in the town. Public/private middle and high schools in Etampes (10 minutes by bus) Shops in Etampes (10 minutes by car). Cycle path nearby to Etampes. SNCF station in Etampes (7 minutes by bus). Paris Austerlitz in 35 minutes (TER) or 55 minutes (RER). ENERGY CLASS: E 268 / CLIMATE CLASS E 67: Estimated average amount of annual energy expenditure for standard use, established based on energy prices as of January 1, 2021: Between EUR3,190 and EUR4,360. Information on the risks to which this property is exposed is available on the Géorisks website: www.georisks.gouv.fr Condominiums of 5 units (No proceedings in progress). Annual expenses : 3048 euros.

Located out of sight and in absolute calm, this family home is an invitation to tranquility just 60 kilometers from Paris. With a plot of approximately 9000 sqm, this residence is pleasantly bordered by two streams and delimited by undergrowth. Built in the 1960s by a famous couple of decorators, this charming house has retained all the charm of its time, but also noble materials such as these turned tiles which harmoniously cover the floor, beams and woodwork. You are welcomed through an entrance opening onto a 56sqm living room, benefiting from pleasant light passing through and a large open fireplace. This ground floor is also composed of a separate kitchen, a pantry, a bathroom with hand basin, an office space adjoining a bedroom and a bathroom complete with a bathroom. Further up, the stairwell divides the first floor into two distinct parts, which would easily make it possible to transform this dwelling into a guest house. On one side: a large boudoir space and a long corridor serving two bedrooms, a bathroom and separate toilets. On the other: Three bedrooms, a bathroom and separate toilets. In addition, a garage and its attic, a vaulted cellar, a covered courtyard and a chalet complete this home. Despite the remarkable care given to this residence, some refreshing work will be required. Enhancement of the spaces will make this place a warm home, ready to accommodate a large family or guests, in a natural setting, conducive to relaxation. Kindergarten and primary in the town. Public/private middle and high schools in Etampes (10 minutes by bus) Shops in Etampes (10 minutes by car). Cycle path nearby to Etampes. SNCF station in Etampes (10 minutes by bus). Paris Austerlitz in 35 minutes (TER) or 55 minutes (RER). ENERGY CLASS: E 264 / CLIMATE CLASS E 83: Estimated average amount of annual energy expenditure for standard use, established based on energy prices as of January 1, 2021: Between EUR6,020 and EUR8,210. Information on the risks to which this property is exposed is available on the Géorisks website: www.georisks.gouv.fr