Plenary halls, exhibition floors, breakout rooms and full-service conference complexes — the venues we recommend for B2B events from 200 to 25,000 attendees.
For congresses, multi-track conferences, awards nights and product launches at scale.
17th arr.Three auditoriums, 60+ meeting rooms, 32,000 m² of exhibition space.
15th arr.Europe's largest exhibition complex — 220,000 m² across 8 pavilions.
1st arr.Beneath the Louvre — Salle Le Nôtre auditorium and 7,000 m² of event space.
19th arr.19th-century iron-and-glass hall, modular for trade shows up to 6,000.
7th arr.1,000-seat plenary, breakout rooms, on-site interpretation booths.
8th arr.Private hôtel particulier near the Élysée, eight reception rooms.
Paris attracts more international congresses than any other city in continental Europe — the International Congress and Convention Association consistently ranks the city in the global top three. Three considerations dominate venue selection for major B2B events: plenary capacity, breakout-to-plenary ratio (target 1:8 to 1:12 attendees), and airport accessibility.
The Palais des Congrès, Paris Expo Porte de Versailles and the new Paris Convention Centre sit on direct metro lines to Charles de Gaulle and Orly. They also offer integrated hotel inventory within 500 metres — critical for multi-day congresses with 1,000+ delegates. Lead times for these venues during peak windows (October trade fair season, May VivaTech period) run twelve to fifteen months.
For B2B conferences of 200 to 800 attendees, institutional venues like UNESCO, OECD and the Cercle de l'Union Interalliée provide a more distinctive backdrop than chain hotels — and tend to be more flexible on catering and AV partners. They suit international events where the venue itself is part of the message.
The Carrousel du Louvre and La Villette's Grande Halle bridge between conference centre and heritage venue — they deliver the technical infrastructure of a convention complex while offering an architecturally distinctive setting. The premium over a standard convention hotel is typically 20–35% but the brand impact is significant.
Paris Expo Porte de Versailles is the largest by total surface (220,000 m² across 8 pavilions). The Palais des Congrès is the largest dedicated conference centre with a single 3,700-seat plenary auditorium.
For events of 1,000+ delegates, twelve to eighteen months. For 200-800 delegate events at institutional venues, six to nine months. Tighter timelines are workable outside the peak October trade-fair window.
UNESCO, OECD, the Palais des Congrès and the Carrousel du Louvre have permanent interpretation infrastructure. Most other venues can install temporary booths via specialist AV partners.