Regensburg — Secret of the Stone Bridge
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Historic Center of RegensburgRegensburg — Secret of the Stone Bridge
📍 Historic Center of Regensburg·🕐 2h – 2h30·📍 ~2.5 km
Also available as:HistoricalMysteryRomanceSupernaturalFairy tale

Regensburg — Secret of the Stone Bridge

Uncover the dark secret buried in the Stone Bridge's construction. Decode medieval clues across Regensburg's landmarks to expose the conspiracy that halted its final arch and doomed its master builder.[1][2][3]

📱 1 to 10 phones · 1 team per phone · Independent codes

Difficulty
·From age 10 years
Starting point :Porta Praetoria (Am Watmarkt)

In 1135, as Regensburg thrived as a key trading hub on the Danube, construction began on the Stone Bridge—a marvel of 16 stone arches defying the river's fury

8
stages
~2.5 km
route
2h – 2h30
at your pace
🚶
walking

Regensburg — Secret of the Stone Bridge

🎭Your Mission

You are Konrad III's imperial emissary, tasked in 1146 with securing Bavaria's vital trade routes and inspecting the Stone Bridge's construction in Regensburg.

Your mission

Delve into Regensburg's millennial layers, where Roman remains and medieval masterpieces tell the story of a Danube crossroads city.

Far more than an escape game

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.

🏛️
Hidden historical gems

At each stop, places ordinary guides miss — secret façades, sculpted crests, alleys steeped in history.

📜
Anecdotes & legends

Every riddle is rooted in a real historical fact or local legend. You leave with dozens of stories to tell.

🏗️
Architecture & heritage

Learn to read buildings — flamboyant Gothic, Baroque, Art Deco — like a real art historian, while having fun.

🚶‍♀️
Immersive wandering

Walk through the city like a novel's character — every alley becomes a stage, every square a theatre.

🎙️
Immersive audio narration

A voice walks with you at every step, tells the story of each place, reads clues, adds a cinematic feel.

📲
Yours forever

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?

🏛️
Outdoor escape game

Explore the city on foot solving puzzles based on real historical facts. No locked room — the city is your playground.

📱
On your smartphone

No app to download. Play directly from your browser. Guided step by step, at your own pace.

👨‍👩‍👧‍👦
Unlimited players

One purchase per phone is enough. Play with family, friends or as a couple — everyone participates.

🎯
Augmented reality

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.

🤖
AI that helps you

Stuck? Progressive personalised hints. The character repeats the puzzle on demand — at your own pace.

🗣️
32 languages

French, English, German, Spanish, Italian + 27 other languages auto-translated by AI.

🎟️

Want to go deeper?

Places tied to your adventure — optional entries, totally up to you · per person

Historical Museum Regensburgoptional
Approx. €8. Discover the permanent collections on the city's history, from the Neolithic to the modern era, in the former 13th-century Dominican chapel.
Optionnel
/pers.
Visit St. Peter's Cathedraloptional
Free access. Admire the 14th-century Gothic stained glass windows and the architecture of the 105-meter towers of Dom St. Peter, Regensburg's religious heart.
Optionnel
/pers.
Regensburg Sausage Tastingoptional
Various prices. Taste the famous 'Regensburger Wurst' in one of the traditional breweries near the Danube, a culinary specialty of Bavaria.
Optionnel
/pers.
Danube River Cruiseoptional
Approx. €15-€20. Explore Regensburg from the river, offering a unique perspective on the Stone Bridge and the city's historic banks.
Optionnel
/pers.
Budget if you do them all / pers.~0

The story that haunts this land

Your quest in Regensburg begins in front of the Porta Praetoria, an imposing remnant of the Castra Regina legionary camp. Erected around 179 AD under Emperor Marcus Aurelius, this 12-meter-high Roman gate, with its two limestone arches, marks the entrance to the ancient city. It was the base of a 30-hectare Roman camp housing 6,000 legionaries, the direct ancestor of today's city. A UNESCO World Heritage site since 2006, the Porta Praetoria offers a first glimpse into Regensburg's rich past, a UNESCO historic city in the heart of Bavaria, and the engineering challenges of the Roman Empire.

Continue towards the Brückturm, the 13th-century watchtower protecting the entrance to the famous Stone Bridge. This 15-meter-high tower, visible from Am Watmarkt, was a strategic control point and a toll collection site on the Danube. It was integrated into the medieval fortifications, connecting the bridge to the city and ensuring its defense. By exploring this historic monument of Germany, you understand the vital role of tolls for Regensburg's prosperity, which became a flourishing commercial center thanks to its control over Bavaria's river and land trade routes.

The Stone Bridge (Steinerne Brücke) itself is a masterpiece of medieval masonry, built between 1135 and 1146 under Emperor Konrad III. 310 meters long with 16 entirely stone arches, it was the only bridge over the Danube in Regensburg for centuries. This historic monument, Germany's and the Danube's oldest surviving bridge, connected north-south trade routes, fostering the city's rise. On the bridge, the Brückenkapelle, a 14th-century Gothic chapel dedicated to Saint James, served pilgrims and merchants, a rare example of a medieval pontifical chapel in Germany, restored in the 20th century and an integral part of the UNESCO monument.

Your journey then takes you to Am Weinmarkt, a historic square that was the wine market in the Middle Ages, a district adjacent to the Stone Bridge and the Danube. The 16th to 18th-century gabled buildings, typical of Bavarian Renaissance architecture, bear witness to Regensburg's past opulence as a medieval commercial center near the quays. 200 meters from the Porta Praetoria, this square is now a tourist site, with its listed patrician houses. It illustrates the continuity of trade and urban life in Regensburg, connecting the Roman and medieval eras.

Finally, your exploration leads you to Domplatz, dominated by Dom St. Peter (Regensburg Cathedral), whose construction began in 1273. This Gothic masterpiece, completed in the 16th century with its 105-meter-high towers, was a site of medieval imperial coronations, linked to the history of the Hohenstaufen. The 14th-century Gothic stained glass windows and the historic organ complete this edifice, Regensburg's religious heart. An interactive visit to the Historisches Museum Regensburg, founded in 1925 in the former 13th-century Dominican chapel near Domplatz, will offer you a comprehensive perspective on Regensburg's history, from the Neolithic to the modern era, including Danubian trade and the Stone Bridge, consolidating your understanding of this UNESCO historic city.

1135
Construction of the Stone Bridge begins.
1146
Completion of the Stone Bridge, a medieval engineering marvel.
1182
Regensburg gains status as a Free Imperial City, partly due to its increased commercial importance from the bridge.

The Route

8 stages through the city

The gameplay: AR, camera, hidden clues

📱Search clues with your cameraRA

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.

8
original puzzles
24
min of narration
🪙 24
TripCoins granted
16
GPS waypoints

How does it work with a group?

One phone = one team. Pick the number at checkout (1 to 10).

🧍
1 phone

Solo, or a group sharing the screen. One team, one code.

👥
2-3 phones

Family, couple, or 2-3 teams competing. Each phone has its own code and its own score.

👨‍👩‍👧‍👦
4 to 10 phones

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.
🕒No date to pick · Code valid 1 year · Play whenever you want

Ready to live this adventure?

Get my code · 12€

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Practical info

Starting point
Porta Praetoria (Am Watmarkt)
Directions on Google Maps
🕐
Duration
2h – 2h30
At your own pace
👥
Players
Unlimited
From age 10
📍
Distance
~2.5 km
Historic heart
Accessibility
Partial
Some cobblestones and stairs
🌐
Languages
17 languages
Built-in translation

Why this route?

🌉

A Legendary Bridge

Explore Germany's oldest stone bridge, a medieval engineering marvel.

📐

Architects' Secrets

Decipher the techniques and principles that ensured the longevity of this structure.

📜

A Millennial Quest

Go back in time to find a forgotten plan, essential to understanding the bridge.

The past reveals its foundations

An engineering and history challenge awaits you.

★ Innovation 2026

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

Q01Do I need to download an app?

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.

Q02Does it work offline?

GPS yes (handled by your phone). Maps yes (tiles cached). AI and hints need an intermittent 4G connection.

Q03How long does a game take?

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.

Q04What happens if I'm stuck?

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).

Q05What's the age range?

From 12 without an adult, from 6 with an adult reading puzzles. Works for families, couples, friend groups, companies.

Q06What if my city isn't in the catalogue?

Pre-register or contact us — we'll email you as soon as your city is live.

Q07What is augmented reality exactly?

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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Your turn to play

Delve into Regensburg's millennial layers, where Roman remains and medieval masterpieces tell the story of a Danube crossroads city.

12€
1 phone
23€
2 phones
33€
3 phones
42€
4 phones
50€
5 phones
56€
6 phones
62€
7 phones
68€
8 phones
74€
9 phones
80€
10 phones

1 purchase = 1 phone. Play several on the same device.

🕒No date to pick · Code valid 1 year · Play whenever you want
Get my code · 12€

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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