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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
You are Samuel Pepys, esteemed diarist and eyewitness to the Great Fire of 1666, tasked by the City of London Corporation to decipher an ancient enigma.
Your mission begins
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.
« 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.
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.
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.
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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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, TikTok.
PWA technology: open the link, it plays in your browser. Same quality as an app, no App Store hassle.
Outdoor escape game format: no physical locks, no actor, no fixed time slot. You start when you want, progress through Leadenhall Market and Financial District, London, England with your phone, and the city itself is the set. More immersive on local history, more flexible in pace.
Easy stroll: between stops you walk 3 to 7 minutes. No tough climbs unless flagged on the product page. If you really want to push, you can jog between stops, but that's not the point.
Yes — it's actually one of our main use cases. Outdoor escape game format, teams of 4 to 6, live ranking possible between groups. For companies above 12 participants, contact us: we can issue linked codes.
Depends on the exact route in Leadenhall Market and Financial District, London, England. 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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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.
🔒Secure payment · Code in 5 min · Free cancellation
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Coupe-file disponibles pour les sites payants de votre parcours. Gagnez du temps, vivez l'aventure pleinement.
Environ 30€. Découvrez les Joyaux de la Couronne et l'histoire des prisonniers royaux dans cette forteresse normande fondée en 1066.
Environ 20€. Accédez à la Galerie des Chuchotements et profitez d'une vue panoramique de Londres depuis le dôme de 111 mètres de Christopher Wren.

Prix variés. Savourez des plats traditionnels britanniques dans cet établissement historique situé au cœur de Leadenhall Market, fondé en 1881.
Environ 6€. Montez les 311 marches de cette colonne de 62 mètres de Christopher Wren, commémorant le Grand Incendie de 1666.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.