The Great Arch
L'Inconnu de la Grande Arche
Synopsis
France, 1983. The biggest architectural competition in history is launched by the new socialist president, François Mitterrand. Coveted by all the biggest international architectural firms, the open-call competition is surprisingly won by an unknown: Johan Otto von Spreckelsen, an architecture teacher from Copenhagen. Until then, the fifty-year-old Dane had built only four buildings: his home, and three small chapels.
Trailers, Teasers & Extra Featurettes
Official promotional previews, behind-the-scenes footage, and exclusive clips.
Official TrailerOfficial
Type: Trailer • Published 2025-12-18
Top Cast
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Claes Bang
Johan Otto von Spreckelsen
Xavier Dolan
Jean-Louis Subilon
Swann Arlaud
Paul Andreu
Sidse Babett Knudsen
Liv von Spreckelsen
Michel Fau
François Mitterrand
Jean des Forêts
Alain Juppé
Micha Lescot
Leloup
Alessandro Bressanello
Marble man
Ilaria Cabras
Marble man's daughter
Viilbjørk Malling Agger
Architect student
Cédric Appietto
Tavelli
Olivier Marguerit
Dewasne
Patrick Sobelman
Saint-Germain
Guillaume Foresti
Forestier
Raphaël Jimenez
Alain Juppé's counselor
Pierre-François Grunewald
François Mitterrand's counselor
François Raison
L'huissier Elysée
Axelle Bossard
Secrétaire Subilon
Release History & Theatrical Window
Alliance Française French Film Festival
Festival / Special Debut
Key Information & Fast Facts
- Director
- Stéphane Demoustier
- Screenplay & Story
- Stéphane Demoustier
- Original Score
- Olivier Marguerit
- Original Title
- L'Inconnu de la Grande Arche
- Country of Origin
- France, Denmark
- Spoken Languages
- Danish, French, English, Italian
- Runtime
- 1h 44m
- Production Studios
- Agat Films & Cie / Ex Nihilo, France 3 Cinéma, Le Pacte, Zentropa Entertainments
Creative Leadership & Key Crew
Stéphane Demoustier
Stéphane Demoustier, Laurence Cossé
Olivier Marguerit
David Chambille
Damien Maestraggi
Muriel Meynard, Marie-Frédérique Lauriot-Dit-Prévost, Marie Gade Denessen
Department Leadership Roster
Stéphane Demoustier
Director
Stéphane Demoustier
Screenplay
Muriel Meynard
Producer
David Chambille
Director of Photography
Damien Maestraggi
Editor
Olivier Marguerit
Original Music Composer
Lise Fischer
Visual Effects Supervisor
Catherine Cosme
Production Design
Camille Rabineau
Costume Design
Marie Gade Denessen
Producer
Age Classification & Content Advisories
Official viewer rating standards and content warnings across international classification boards.
International Certification Matrix
Parental Guidance — Recommended for mature viewers.
Production Stills & Gallery
Official cinematic photography and background stills for The Great Arch.
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Frequently Asked Questions About The Great Arch
Quick factual answers about cast, synopsis, director, box office, and release information.
What is The Great Arch about?
France, 1983. The biggest architectural competition in history is launched by the new socialist president, François Mitterrand. Coveted by all the biggest international architectural firms, the open-call competition is surprisingly won by an unknown: Johan Otto von Spreckelsen, an architecture teacher from Copenhagen. Until then, the fifty-year-old Dane had built only four buildings: his home, and three small chapels.
Who directed The Great Arch?
The Great Arch was directed by Stéphane Demoustier.
Who stars in The Great Arch?
The principal cast of The Great Arch includes Claes Bang, Xavier Dolan, Swann Arlaud, Sidse Babett Knudsen, Michel Fau.
When was The Great Arch released and how long is it?
The Great Arch was released in 2025 with a total runtime of 1h 44m.
Who composed the musical score for The Great Arch?
The original motion picture soundtrack for The Great Arch was composed by Olivier Marguerit.
Is The Great Arch based on a book or true story?
The Great Arch is adapted from the following source material: Novel: "Laurence Cossé".
What is the age rating and content advisory for The Great Arch?
The Great Arch holds official age classifications: AU: PG (Parental Guidance — Recommended for mature viewers.); FR: TP.