Münster — Decode the Westphalian Secret
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Historic center of MünsterMünster — Decode the Westphalian Secret
📍 Historic center of Münster·🕐 2h30 – 3h·📍 ~3 km
Also available as:HistoricalMysterySpy thrillerSupernatural

Münster — Decode the Westphalian Secret

Decipher the hidden codes embedded in the Peace of Westphalia negotiations. Uncover why diplomats concealed a crucial clause that reshaped Europe's fate.

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

Difficulty
·From age 12 years
Starting point :Prinzipalmarkt, Münster

October 1648

8
stages
~3 km
route
2h30 – 3h
at your pace
🚶
walking

Münster — Decode the Westphalian Secret

🎭Your Mission

You are a clandestine envoy, sent to Münster in 1648, tasked with uncovering a secret clause of the Westphalian peace.

As you retrace the negotiations that ended the Thirty Years'

Delve into Münster, a Hanseatic city in North Rhine-Westphalia, where the ghosts of the 1648 Treaty of Westphalia and the 1534 Anabaptist Siege still whisper their secrets.

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

LWL Museum of Art and Cultureoptional
€12. Explore collections ranging from the Middle Ages to contemporary art, featuring regional and international works.
Optionnel
/pers.
Münster Lake Museumoptional
€7. Discover the natural and cultural history of the Münster region through interactive exhibitions.
Optionnel
/pers.
Pumpernickel Tastingoptional
€5-10. Taste this traditional Westphalian black rye bread, a local specialty to discover in an artisan bakery.
Optionnel
/pers.
Bike Ride along the Aa Canaloptional
Bike rental €10-15. Enjoy the green cycle paths along the canal, a popular activity for Münster locals.
Optionnel
/pers.
Budget if you do them all / pers.~0
« Perpetual peace in the region of Westphalia »
Commemorative inscription in the Friedenssaal, Rathaus Münster, post-1648

The story that haunts this land

Your quest begins at Prinzipalmarkt, Münster's main market since the Middle Ages. This ensemble of 35 gabled houses, mostly from the 17th century, was faithfully reconstructed after the destruction of 1943. As you walk its 500 meters lined with Renaissance and Baroque facades, you discover the echo of public executions that took place there until the 19th century. It is here, in the heart of the city, that the first pieces of the 1648 Treaty of Westphalia puzzle are revealed, laying the groundwork for your exploration of North Rhine-Westphalia's heritage.

Continue to the Historisches Rathaus Münster, built between 1350 and 1400. It was in its Friedenssaal, a 42 m² room, that plenipotentiaries like Axel Oxenstierna and Ferdinand III negotiated the Treaty of Westphalia, signed on October 24, 1648. The 33-meter watchtower, added in the 14th century, already watched over the debates. You perceive the importance of this place for the history of Münster and Europe, a historic monument in Germany where peace was sealed after decades of conflict. The Krameramtshaus, with its Renaissance facade adorned with allegorical sculptures, shows you the prosperity of the 16th-century merchant guilds that indirectly financed these historical moments.

Your journey then takes you to St.-Paulus-Dom, a Gothic cathedral begun in 1220 and completed around 1260, with its 58-meter nave and 34-meter high vault. Its 112-meter south tower, the second tallest in Germany, dominates the city. This place was the scene of the Anabaptist siege in 1534-1535, where 13 rebels were executed. A little further on, the Überwasserkirche, a Gothic church built between 1331 and 1341 on an artificial island in the Aa canal, offers an architectural contrast, its 14th-century frescoes restored in 1950 testifying to a more serene spirituality.

A stop at St. Lamberti-Kirche, a 13th-century hall church, is essential. Its 84-meter octagonal tower, erected in 1470, is famous for the suspended cages that displayed the bodies of Anabaptist leaders Bernard Rothmann, Jan van Leiden, and Bernhard Knipperdolling after the 1535 siege. This poignant image, a symbol of the Anabaptist Siege Münster, contrasts with the Baroque elegance of the Erbdrostenhof, a mansion built between 1760 and 1770 by Johann Conrad Schlaun for the von Fürstenberg family. Its 1,200 m² and 40-meter facade remind you of the power of the episcopal principality's administrators until 1803.

The culmination of your exploration brings you back to the Friedenssaal im Historischen Rathaus. This hall, built in 1644 for the negotiations, saw 194 delegates sign the 12-meter-long conference table on October 24, 1648. Although the original furniture was destroyed in 1943 and replaced by faithful copies in 1952, the spirit of the 1648 Treaty of Westphalia remains palpable. By completing this thematic tour of Münster, you not only gain the satisfaction of deciphering a historical secret but also a deeper understanding of this city, its North Rhine-Westphalia heritage, and its crucial role in the construction of modern Europe, through Münster's monuments and history.

1618
Start of the Thirty Years' War with the Defenestration of Prague.
1648
Signing of the Peace of Westphalia in Münster and Osnabrück.
1653
The Perpetual Diet of Regensburg formalizes the post-Westphalian imperial order.

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
Prinzipalmarkt, Münster
Directions on Google Maps
🕐
Duration
2h30 – 3h
At your own pace
👥
Players
Unlimited
From age 12
📍
Distance
~3 km
City center
Accessibility
Full
Flat route
🌐
Languages
17 languages
Built-in translation

Why this route?

🕊️

End of War

Relive the key moments of the negotiations that ended the Thirty Years' War.

📜

Historic Treaties

Discover the impact of the Treaties of Münster and Osnabrück on Europe.

👑

Modern Diplomacy

Explore the beginnings of the nation-state system and international relations.

Peace is an art, its negotiation a science.

Between shadows and light, truth hides.

★ 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.

Avis des aventuriers

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Your turn to play

Delve into Münster, a Hanseatic city in North Rhine-Westphalia, where the ghosts of the 1648 Treaty of Westphalia and the 1534 Anabaptist Siege still whisper their secrets.

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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