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Uncover the hidden code carved into Leadenhall Market's dragon ornaments—a Victorian architect's encrypted message about the Great Fire's darkest conspiracy.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1881, Sir Horace Jones rebuilt Leadenhall Market from the ashes of the 1666 Great Fire, but he left behind a puzzle
Step into the shoes of Samuel Pepys, diarist and eyewitness to the Great Fire of 1666, tasked by the City of London Corporation to decipher an ancient enigma. Your mission begins at Leadenhall Market, a Grade I Listed Building of wrought iron and glass, founded in 1881 on the vestiges of medieval Leadenhall Manor. You will search for clues scattered among its 35 specialist shops and its historic The Lamb Tavern. At each stage, your phone will reveal augmented reality messages on Victorian facades, Gracechurch Street's cobblestones, or hidden symbols near St Paul's Cathedral. Along this route of approximately 1.5 km, which will take you around 105 minutes, you will traverse the history of this part of London, from the Norman fortress of the Tower of London to the elegance of Aldwych. More than an outdoor escape game: an interactive visit immersed in 2,000 years of history, with anecdotes revealed at each stop and confidential sites that classic guides often miss.
Les vrais lieux que vous explorerez au fil de l'aventure. Énigmes en réalité augmentée à chaque étape.
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
« Lord, save the King »— Traditional motto of the City of London
Your dragon quest begins at Leadenhall Market, a Victorian covered market built in 1881. This City of London site, with its cast iron and glass architecture, was erected on the site of a former 14th-century medieval residence, Leadenhall Manor. As you stroll through its aisles, you'll recognize the filming locations for Diagon Alley and the Leaky Cauldron from the Harry Potter films, particularly visible from Gracechurch Street. This historic street, laid out after the Great Fire of 1666 according to Christopher Wren's plan, was already a major commercial artery in the Middle Ages, mentioned in City archives as early as the 12th century.
Not far from there, about 500 meters to the east, stands the imposing Tower of London. This Norman fortress, founded in 1066 by William the Conqueror, has been a UNESCO World Heritage Site since 1988 and has housed the famous Crown Jewels since 1303. It is here that figures such as Anne Boleyn in 1536 and Lady Jane Grey in 1554 met their tragic end, imprisoned and executed. The Tower of London reminds you of the ancient power that shaped the capital, a force often symbolized by the mythical creatures you seek.
Your journey then takes you towards St Paul's Cathedral, a Grade I listed historic monument, visible from Leadenhall Market about 800 meters to the west. Rebuilt by Christopher Wren between 1668 and 1697 after the devastating Great Fire of 1666, its iconic 111-meter-high dome is a symbol of London's resilience. This wedding venue for Princess Diana and Prince Charles in 1981 embodies the continuity and grandeur of the British monarchy, another pillar of London's identity that has witnessed so many legends.
As you continue your exploration of the City of London, you'll pass near The Monument to the Great Fire of London, a 62-meter-high column built between 1671 and 1677 by Christopher Wren, about 400 meters southwest of Leadenhall Market. This monument commemorates the Great Fire of 1666, which destroyed 13,200 houses and 87 churches, an event that profoundly reshaped the city and its infrastructure, including Fenchurch Street Station, opened in 1841 and renovated in 2017, itself a witness to a devastating fire in 1865.
Your quest for dragons will have led you through centuries of history, tales of resilience, and architectural vestiges. Arriving at Aldwych, the final point of the route, a semi-circular crescent created in 1905 during a major urban development operation, you will contemplate Grade I and II listed buildings like Somerset House. This 1.5 km itinerary in Greater London will have revealed how the city has preserved traces of its medieval, Victorian, and modern past, from the Crown Jewels to post-fire reforms, offering an interactive visit to the heritage of the City of London.
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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Awaken legendary creatures sleeping beneath London's most famous Victorian market
Discover draconic secrets hidden in every pillar and ornament of Leadenhall Market
Explore esoteric traditions of London merchants and their pacts with guardian dragons
Unleash the magic of London dragons
A legendary quest in Europe's most beautiful Victorian market
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, WhatsApp, 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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Delve into the heart of the City of London, where a Victorian market resembling a film set conceals the millennial secrets of the capital's guardian dragons.
1 purchase = 1 phone. Play several on the same device.
No calendar booking. Code sent immediately by email.
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