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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
October 1648
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.
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
« Perpetual peace in the region of Westphalia »— Commemorative inscription in the Friedenssaal, Rathaus Münster, post-1648
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.
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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Relive the key moments of the negotiations that ended the Thirty Years' War.
Discover the impact of the Treaties of Münster and Osnabrück on Europe.
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.
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.
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 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.
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
🪙+24 TripCoins granted with your booking
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12€. Explorez des collections allant du Moyen Âge à l'art contemporain, avec des œuvres régionales et internationales.
7€. Découvrez l'histoire naturelle et culturelle de la région de Münster à travers des expositions interactives.
5-10€. Goûtez ce pain de seigle noir traditionnel de Westphalie, spécialité locale à découvrir dans une boulangerie artisanale.
Location de vélo 10-15€. Profitez des pistes cyclables verdoyantes qui bordent le canal, une activité prisée des habitants de Münster.
💡 Réservation optionnelle — vous pouvez aussi acheter sur place. Tous les liens ouvrent dans une nouvelle fenêtre, votre visite OddballTrip reste préservée.