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Uncover the cryptic legacy of Postman Cheval. Decode symbols carved in stone across his secret sites to reveal the final resting place of his untold dream before it vanishes forever.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1879, humble postman Ferdinand Cheval stumbled upon a peculiar stone during his rounds in Hauterives, igniting a lifelong obsession
You are a local historian, arriving in Hauterives in 1913, tasked with documenting the extraordinary legacy of Joseph-Ferdinand Cheval, the postman who, from 1
Immerse yourself in the creative odyssey of Joseph-Ferdinand Cheval, the rural postman who built a masterpiece of naive architecture in Hauterives over 33 years.
Your quest begins in front of the Former Post Office of Hauterives, the starting point of Joseph-Ferdinand Cheval's daily 30 km rounds from 1869. It was during these rounds that, on April 19, 1879, he stumbled upon a stone, triggering his incredible project. This place, where he worked as a rural postman, is the cradle of the inspiration that would give birth to one of the most visited heritage sites in Auvergne-Rhône-Alpes, attracting around 200,000 visitors annually. The Former Post Office of Hauterives immerses you directly into the daily life of this man before he became the builder we know.
The path then leads you to the Palais Idéal du Facteur Cheval, the work of a lifetime. Built by Joseph-Ferdinand Cheval from 1879 to 1912, a total of 33 years of solitary work, this monument was erected when he was between 43 and 76 years old. It is the result of a relentless collection of pebbles and stones gathered during his rounds. Classified as a historic monument in 1969 by André Malraux, who considered it the unique example of naive architecture, the Palais Idéal du Facteur Cheval is a testament to perseverance and extraordinary artistic vision in the heart of Hauterives. Every detail tells a part of the story of this unique builder.
Exploring the surroundings of the Palais Idéal, you discover the Church of Hauterives, a parish building located in the heart of the village. Although not directly built by Cheval, it is an integral part of the local heritage and the living environment that nourished his inspiration. The church, by its constant presence, was the silent witness to the postman's extraordinary construction site, in close proximity to his home and workplace. It anchors the Palais Idéal in the historical and architectural context of Hauterives, highlighting the integration of the work into the village fabric of the Drôme des collines.
Your journey finally takes you to the Hauterives Cemetery, where Factor Cheval rests. This is where the Tomb of Silence and Endless Rest is located, a work subsequent to the Palace, completed after 1912. Built with the same method, using pebbles and shells, this tomb is classified as a historic monument and is inspired by the North facade of the Palace with its representations of Adam and Eve. This last masterpiece testifies to Cheval's desire to continue his work until his eternal rest, thus linking his life and death to his singular art in this Auvergne-Rhône-Alpes village. The Place de la Mairie d'Hauterives, seat of the commune that has owned the Palais Idéal since 1994 following the bequests of his granddaughters Alice and Eugénie, recalls the institutional anchoring of this historic monument.
As you complete this journey in Hauterives, you carry with you the story of a man, Joseph-Ferdinand Cheval, whose perseverance transformed collected stones into a globally recognized historic monument. This interactive circuit allowed you to understand how a rural postman, born in 1836, could create a major tourist site, an example of naive architecture, that continues to inspire. The legacy of Factor Cheval, from the Town Hall Square to the Palais Idéal, including his tomb, is a deep exploration of the heritage of Auvergne-Rhône-Alpes, a true interactive visit that reveals the secrets of a self-taught genius.
You're not just buying an escape game. You're carrying a living guide — historical anecdotes, forgotten legends, key monuments, hidden architecture — unfolding as you go.
At each stop, places ordinary guides miss — secret façades, sculpted crests, alleys steeped in history.
Every riddle is rooted in a real historical fact or local legend. You leave with dozens of stories to tell.
Learn to read buildings — flamboyant Gothic, Baroque, Art Deco — like a real art historian, while having fun.
Walk through the city like a novel's character — every alley becomes a stage, every square a theatre.
A voice walks with you at every step, tells the story of each place, reads clues, adds a cinematic feel.
Keep access to the guide & game for 1 year. Come back any time, share it with friends.
« You will not leave this city the way you entered it. »
Explore the city on foot solving puzzles based on real historical facts. No locked room — the city is your playground.
No app to download. Play directly from your browser. Guided step by step, at your own pace.
One purchase per phone is enough. Play with family, friends or as a couple — everyone participates.
Point your phone at the façade: a historical character appears and speaks to you in your language. Golden letters magically write themselves on the wall to reveal the puzzle answer.
Stuck? Progressive personalised hints. The character repeats the puzzle on demand — at your own pace.
French, English, German, Spanish, Italian + 27 other languages auto-translated by AI.
Places tied to your adventure — optional entries, totally up to you · per person
8 stages through the city
The gameplay: AR, camera, hidden clues
At each stop, open your phone camera: an augmented reality character appears on the façade and speaks your language. Hunt the clue — it materializes as golden letters on the real wall or floats in front of you. When you find it, the phone vibrates, an AR chest opens and reveals your answer fragment. 8 stops, 8 clues to find with the camera, 1 final code.
The stops on your route are a surprise. You'll discover them one by one, guided by your phone, starting from the meeting point.
One phone = one team. Pick the number at checkout (1 to 10).
Solo, or a group sharing the screen. One team, one code.
Family, couple, or 2-3 teams competing. Each phone has its own code and its own score.
Friends, bachelor/bachelorette, small office outing — each their own code, each plays at their own pace. Tiered pricing then €6 flat per phone from the 6th.
Ready to live this adventure?
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Discover the unique and unclassifiable style of a masterpiece built by a self-taught artist.
Immerse yourself in 33 years of a man's dedication to his wildest dream.
Unravel the hidden messages and philosophy of an extraordinary builder.
An ordinary man's dream, built stone by stone.
Unveil the 'Notebook of Forgotten Dreams' of Postman Cheval.
OddballTrip combines gamified play, augmented reality and AI. All our competitors deliver 1 or 2 of these angles. We deliver all 5.
A golden chest floats in front of the monument. Tap → opening animation → reveals a secret message.
Point your phone at the façade: a knight, witch, monk, sailor, detective or ghost appears full-screen and speaks to you in your language with their dedicated ElevenLabs voice (each character has their own unique voice) — your living guide.
At the puzzle climax, golden letters magically write themselves on the real wall — that's the puzzle answer. An unforgettable visual effect.
Every puzzle available as text AND voice-over: read at your own pace or listen eyes-free while walking. Great in groups and for accessibility.
A mini-radar shows the target even behind you, and the phone vibrates when you aim in the right direction.
Every puzzle weaves in real historical facts (architecture, era, anecdotes). You learn by playing — like a gamified audioguide.
3 levels of AI-generated help: vibe → where to look → answer format. You're never stuck.
At the end of the game, capture a selfie with OddballTrip banner + mascot, shareable on Instagram, TikTok.
PWA technology: open the link, it plays in your browser. Same quality as an app, no App Store hassle.
No, never. You get a link, you click, it plays in your browser. That's the point of a PWA: same as an app, without the hassle.
GPS yes (handled by your phone). Maps yes (tiles cached). AI and hints need an intermittent 4G connection.
1 h 30 to 2 h 30 depending on your pace. The timer runs but only for the leaderboard — you play at your own tempo.
You get 3 levels of hints per puzzle (increasing penalty). If truly stuck, you can skip the step (45-min penalty but you keep going).
From 12 without an adult, from 6 with an adult reading puzzles. Works for families, couples, friend groups, companies.
Pre-register or contact us — we'll email you as soon as your city is live.
Point your phone at the façade: a historical character appears full-screen and speaks to you in your language. At the puzzle climax, golden letters magically write themselves on the real wall — that's your answer. After each puzzle solved, a treasure chest floats in front of you. Seeing is believing.
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Immerse yourself in the creative odyssey of Joseph-Ferdinand Cheval, the rural postman who built a masterpiece of naive architecture in Hauterives over 33 years.
1 purchase = 1 phone. Play several on the same device.
No calendar booking. Code sent immediately by email.
🔒Secure payment · Code in 5 min · Free cancellation
🪙+24 TripCoins granted with your booking
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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
10€. Explorez l'intérieur et les jardins de ce monument historique, classé en 1969 par André Malraux, et découvrez l'architecture naïve construite par Joseph-Ferdinand Cheval de 1879 à 1912.
Gratuit. Découvrez les rues où Joseph-Ferdinand Cheval effectuait ses tournées, en passant par l'Ancienne Poste et la Place de la Mairie, au cœur de la Drôme des collines.
Variable. Savourez les spécialités de la Drôme des collines dans les commerces de Hauterives, comme la pogne ou le Suisse, des délices régionaux d'Auvergne-Rhône-Alpes.
Gratuit. Rendez-vous au cimetière de Hauterives pour admirer la dernière œuvre de Joseph-Ferdinand Cheval, classée monument historique et construite avec la même passion que le Palais idéal.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.