The grand salon in conference layout

Companies & institutions

Your seminars in a château full of charm

Just 25 km from Brussels, the Château de Bois-Seigneur-Isaac hosts your seminars, strategy days, business dinners and client evenings in the charm of an eighteenth-century family home. Around you, the family portraits; outside the windows, the French formal gardens.

Which meetings?

  • Company seminars

    Eighteenth-century salons, period parquet floors, the gardens outside the windows and the park for the breaks: a château full of character and charm, where your teams enjoy coming together and thinking differently. Projector, screen and Wi-Fi on site.

  • Leadership offsites

    A day away from the office to step back, with the park for breaks and one-to-one conversations.

  • Business dinners

    A dinner around a single table in the portrait-hung Dining Room, or up to 110 seated guests in the drawing rooms.

  • Themed events

    A company Christmas or New Year dinner, an evening with a mentalist, a casino night, a barbecue in the park with your clients: themed evenings in a setting that surprises your guests.

  • The grand salon set for a private concert: grand piano and rows of velvet chairs

    Private concerts for your clients

    A recital in the grand salon, beneath the family portraits, followed by drinks or dinner: a rare evening to thank your clients and partners.

  • Corporate receptions and anniversaries

    Drinks through the suite of drawing rooms and on the terraces, for up to 300 guests.

  • Annual general meetings

    Shareholders, members or partners: up to 90 people in theatre layout in the Great Drawing Room.

  • Board meetings in an exceptional setting

    A long table beneath the family portraits, the calm and discretion of a listed historic house: a prestigious, elegant setting for the meetings where important decisions are made.

  • Filming and photo shoots

    Films, series, commercials or fashion shoots: the eighteenth-century salons, grand staircase, park and beech avenue offer authentic settings, 25 km from Brussels.

The opposite of an anonymous venue

The grand salon with two long tables

A lived-in house

18th-century parquet, mouldings, fireplaces and family portraits: you are welcomed into a home, not a standardised rental space. Unlike a hotel or a conference centre, the château has a soul, and it lends your event a sense of authenticity your guests remember.

The European flag at the château

A setting that carries the subject

Count Jean-Charles Snoy et d'Oppuers, who lived here, was one of the negotiators and signatories of the Treaty of Rome. A house where Europe was thought through lends itself naturally to long-term decisions.

The grand salon in seminar layout

Tailored to you

From a committee of 12 around one table to a seminar of 90, the spaces are set up around your agenda. For meetings of up to 30 people we can arrange lunch or dinner; for larger groups you bring the caterer of your choice, and we are happy to recommend caterers who know the house well.

The front with its clock

Easy to reach

Brussels Ring road, exit 23 « Ophain », then 2 km. Parking in the beech avenue opposite the château entrance.

Capacity by room

Great Drawing Room

70 m²

  • Boardroom24
  • U-shape26
  • Theatre90
  • Round tables60
  • Two long tables60
  • Standing reception100
Square Drawing Room

55 m²

  • Boardroom20
  • U-shape20
  • Theatre55
  • Round tables48
  • Two long tables—
  • Standing reception70
Dining Room

35 m²

  • Boardroom16
  • U-shape—
  • Theatre—
  • Round tables24
  • Two long tables—
  • Standing reception35
Hall

45 m²

  • Boardroom—
  • U-shape—
  • Theatre—
  • Round tables—
  • Two long tables—
  • Standing reception50
Library

24 m²

  • Boardroom10
  • U-shape—
  • Theatre—
  • Round tables—
  • Two long tables—
  • Standing reception—
Kitchen

40 m²

  • Boardroom10
  • U-shape—
  • Theatre—
  • Round tables—
  • Two long tables—
  • Standing reception—

The ground floor as a whole · 205 m² — Seated meal 110 guests · Reception 300 guests

Indicative capacities, to be adapted to the furniture and running order of your event.

The château is always reserved as a whole: for the length of your event, the entire house is yours.

Equipment and services

  • Wi-Fi
  • Projector and screen
  • Parking in the beech avenue, opposite the château entrance
  • 40 m² kitchen
  • Caterer of your choice, or in-house lunch or dinner for up to 30
  • 25 km from Brussels — Ring road, exit 23 « Ophain »

Have a date in mind?

Tell us the type of meeting, the number of participants and the date you are considering, and we will come back to you with a proposal.

Check availability