Secrets of the Cité
Two thousand years of History on one island
📱 1 to 10 phones · 1 team per phone · Independent codes
From the Conciergerie where Marie-Antoinette awaited her execution to the stained glass of Sainte-Chapelle that housed the relics of Christ, the Île de la Cité hides beneath its cobblestones the remains of Lutèce, the Roman city that became Paris.
Beneath every stone of the island, a secret Paris tried to forget
The Île de la Cité has been the beating heart of Paris for over two millennia. It is here that the Parisii settled, that the Romans built Lutèce, that the kings of France dispensed justice, and that the Revolution severed heads. From Marie-Antoinette's cell to the relics of Christ's Passion, every square meter of this island carries the weight of an extraordinary history. Your investigation begins before the Conciergerie — the queen's last residence before the scaffold.
« "I did not mean to step on your foot, sir." »— — Marie-Antoinette, to her executioner, October 16, 1793
The Île de la Cité — the cradle of Paris
Around 250 BC, the Gallic tribe of the Parisii settled on this island naturally protected by the Seine. The Romans conquered it in 52 BC and founded Lutèce, whose remains — baths, forum, dwellings — still sleep beneath the square of Notre-Dame in the Archaeological Crypt.
In the Middle Ages, the island became the center of royal power. Saint Louis had the Sainte-Chapelle built between 1242 and 1248 to house the Crown of Thorns of Christ, purchased at great expense from the Emperor of Constantinople. Its 1,113 stained-glass windows form one of the largest collections of 13th-century stained glass in the world.
During the French Revolution, the Palais de la Cité — former royal residence — became the Conciergerie, the antechamber of the guillotine. Over 2,700 prisoners passed through before their execution, including Marie-Antoinette, who spent her last 76 days in a damp, dark cell before mounting the scaffold on October 16, 1793.
A game, a guided tour and a heritage guide — all in one
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. »
How does it work?
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.
The game downloads to your phone on start. Once the "✓ Downloaded" indicator appears, everything works without data — narration, AR, GPS and puzzles. Perfect abroad without a data plan.
The Route
5 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.
How does it work with a group?
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.
- ✓All codes are independent — play at the same time OR separately, each team advances at its own pace.
- ✓Leaderboard between your teams + global game leaderboard — each score appears in the public ranking.
- ✓More than 10 phones or need a personalized quest? Discover custom tours.
Ready to live this adventure?
Get my code · 12€No calendar booking. Code sent immediately by email.
🔒 Secure payment · Code in 5 min · Free cancellation
Practical info
Why this route?
Royal memory
Relive Marie-Antoinette's last days and the intrigues of royal power in the heart of Paris.
World heritage
Explore three UNESCO-listed monuments: the Conciergerie, Sainte-Chapelle, and the Notre-Dame site.
Ancient codes
Decipher Latin inscriptions, medieval symbols, and revolutionary messages.
Sacred treasures
Uncover the mystery of the relics of Christ's Passion and the narrative stained glass of Sainte-Chapelle.
Lutèce rediscovered
Descend beneath Notre-Dame's square to explore the remains of the original Roman city.
She is tossed by the waves but does not sink.
Uncover the secrets of the island where Paris was born.
9 features nobody else has
OddballTrip combines gamified play, augmented reality and AI. All our competitors deliver 1 or 2 of these angles. We deliver all 5.
AR treasure chest
A golden chest floats in front of the monument. Tap → opening animation → reveals a secret message.
AR narrator character
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.
Magic golden letters
At the puzzle climax, golden letters magically write themselves on the real wall — that's the puzzle answer. An unforgettable visual effect.
Written + audio narration
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.
360° radar + vibration
A mini-radar shows the target even behind you, and the phone vibrates when you aim in the right direction.
Heritage storytelling
Every puzzle weaves in real historical facts (architecture, era, anecdotes). You learn by playing — like a gamified audioguide.
Progressive AI hints
3 levels of AI-generated help: vibe → where to look → answer format. You're never stuck.
AR selfie memento
At the end of the game, capture a selfie with OddballTrip banner + mascot, shareable on Instagram, TikTok.
Zero app to install
PWA technology: open the link, it plays in your browser. Same quality as an app, no App Store hassle.
Frequently asked questions
Q01Concretely, how does it unfold outdoors?
You arrive in Paris · Île de la Cité — Conciergerie, Sainte-Chapelle, Crypt, open the link on your phone, the story starts. It's the modern outdoor escape game: audio narration, camera puzzles, final code unlocked as a team. No install. No need to book a time slot.
Q02How long does it take to finish Secrets of the Cité?
Plan 1 h 30 to 2 h 30 depending on your pace. Some finish in 1 h 10, others take 3 h in slow-mode. No pressure: the clock only counts for the leaderboard, you play at your tempo.
Q03Do we need to be several people to enjoy it?
No, solo works very well. The outdoor escape game format in self-guided mode leaves room for introspection: read the story at your pace, hunt clues like a detective. 2-6 players is more social, solo is more contemplative.
Q04Is Secrets of the Cité stroller-accessible?
Depends on the exact route in Paris · Île de la Cité — Conciergerie, Sainte-Chapelle, Crypt. The vast majority of stops are downtown, on sidewalks or squares. If a stair or narrow passage is involved, it's flagged on the product page. Generally: yes, doable with a standard urban stroller.
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Your turn to play
From Marie-Antoinette's cell to the Roman ruins of Lutèce, traverse two thousand years of History on the island where Paris was born in an escape game where every monument hides a secret.
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
🪙+15 TripCoins granted with your booking
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