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Host your meeting in a green
oasis just outside Paris

Nestled in a stunning 50-hectare park on the outskirts of Paris, the Estate boasts the following:
Our expert team is on hand to advise and support you in designing and hosting your meetings in this rural retreat.

Seminar rooms

Functional, connected spaces that encourage innovation and collaboration

Conferences, training sessions, workshops: the workspaces at Les Fontaines can be adapted to suit the needs of businesses looking to host events for up to 700 people.

All rooms are equipped with:

Small and medium-sized rooms

Thirty 19–22 m² rooms, some equipped with a screen and videoconferencing system

Large rooms

Twelve 60–240 m² modular rooms
Four 580 m² breakout rooms on the first floor, with terraces and a view over the park
One 80 m² room

Special rooms

Studio: an 80 m² space for independent use or with a production team
Creative room: an 80 m² space specifically for devising, designing and developing projects and programs


450 seats
Built-in control room
Cyclorama, 22 m wide x 4.5 m high

An exceptional venue,
serving exquisite food

Head chef Jean-François Picq and his team are passionate about what they do, and you can taste the hard work and pride that go into every dish they serve. During your seminar, meals are served in the castle or, in summer, outside.

Our menus reflect our CSR commitments and actions, and feature fresh, local, seasonal products that are organic and/or fair-trade.

Our wines are organic or biodynamic.*

* apart from certain fine and prestigious wines

Our range of menus

We’ll work with you to put together menus that suit your needs, based on your preferences, tastes, and the objectives of your seminar, and taking into account specific dietary requirements.

Seminar menu

Whether you opt for drinks and nibbles, a buffet, or a sit-down meal, consider including a local specialty or vegetarian element

Gala menu

Choose excellence


Build your menus and entertainment around the theme of your event

Our dining areas

A plethora of possibilities for your dining pleasure.

Deluxe rooms

In the castle, there are various magnificent rooms that can host up to 500 people for a sit-down meal or 700 for a cocktail reception.

There is also an elegant bar surrounded by a piano lounge, winter garden and club room – ideal for a variety of evening events.

The Forum and Café

The Forum Café, opposite the castle, is sure to become the “in place” during your seminar. Dinners and parties can also be arranged there.

Outside spaces

In summer, the terraces – with a view of the castle or overlooking the pond – are set up as restaurants. Why not enjoy a rustic lunch at the Normandy Farm or a cocktail on one of our rooftops?


Modern and environmentally friendly rooms

In a calm and green setting, the rooms are designed for participants to rejuvenate during their seminar.

As with everything else at Les Fontaines, they comply with our commitment to sustainability.

The rooms are heated and cooled by geothermal energy, and the electricity we use is from 100% renewable sources.

All villas have rooms that can accommodate guests with reduced mobility.

In 2022, the renovation we carried out the previous year saw Les Fontaines awarded the Janus Label of Excellence in the Living Space category by the French Institute of Design.

Services on request


Standard room

Comfortable and stylish
272 standard rooms (17 m²) equipped with everything you need for a pleasant stay.

Superior room

Room with a view
23 superior rooms (18 m²) for single occupation, featuring a private terrace and double aspect, with a view of the park.


Comfortable, stylish, luxurious

5 suites (34 m²) that ooze comfort and luxury. Each has a private terrace with a panoramic view of the castle or the park.
Additional equipment Nespresso coffee machine Courtesy tray Focal speakers Record-player Dyson hairdryer

Activities: sport and well-being on the Estate

At Les Fontaines, your event participants are spoiled for choice when it comes to sports facilities and equipment.

Jogging, mountain-biking, etc.

Mountain bikes are offered free of charge at the reception.

The swimming pool

Swimmers will love this 20-meter-long pool with a view of the park.

The Thermes

Here, you’ll find:

Tennis, football and rugby

The reception provides the necessary equipment free of charge.

History: Les Fontaines through the centuries

The Estate wasn’t always a place for business meetings. Since the modern age, however, it has consistently been a place of collaboration, discovery and culture.
History: from the 18th to the 21st century
In 1781, Jacques Berthault began to assemble various plots of land into an estate, which he called “Les Fontaines” and where he created a romantic garden in the style that was popular at the time. He erected several buildings and diverted the river to create a pond, which is still here today.
In 1878, Baron Nathan James Edouard de Rothschild acquired the property and commissioned his personal architect, Félix Langlais, to build the “château des Fontaines.”
But the baron died in 1881 – a year before the castle was finished. Ten years after its completion, his wife, known as “Baroness James,” had the Normandy Farm added. She lived on the estate until 1930 and helped turn it into a place where people came to discuss the arts and share knowledge. Following the death of her son, Henri de Rothschild, in 1946, the site was sold to the Jesuit Order, which created a cultural center complete with a vast library. In 1998, the Jesuits, unable to afford the upkeep of the site, sold the estate to Capgemini Group, and the library’s 500,000 documents – some of them very rare, such as a section of the first Gutenberg Bible – were moved to the Lyon public library. By establishing its main international campus there, Capgemini maintained the site’s vocation as a place for exchange, knowledge-sharing and innovation. Ambitious architecture: a castle of many influences Les Fontaines castle combines a variety of architectural styles, with a regional influence. This is in keeping with the desire of the Rothschild family to reflect the pan-European character of the dynasty:
  • The main façade is in the style of Henri IV and the Place des Vosges in Paris,
  • The round towers are neo-Gothic,
  • the central pavilion is inspired by the Northern (Dutch and English) Renaissance,
  • and, especially, the Eiffel-type steel frame – the epitome of modernity and innovation at the time.