Grodno's Hidden Covenant — Decode the Three Faiths Pact
Decipher a secret 18th-century charter that bound Catholic, Orthodox, and Jewish leaders in an underground alliance. Uncover why it was buried—and what forces tried to erase it.
📱 1 to 10 phones · 1 team per phone · Independent codes
In 1795, as empires carved up Eastern Europe, Grodno's three religious communities—Catholic, Orthodox, and Jewish—forged an extraordinary pact
Grodno's Hidden Covenant — Decode the Three Faiths Pact
You are a scholar of forgotten histories, drawn to Grodno in the late 1970s, tasked by Isaac Bashevis Singer himself to uncover a lost pact between communities.
Your
Decipher the centuries-old alliances and secrets carved into the stone of Grodno, a city of a thousand faces where three faiths coexisted for centuries.
The story that haunts this land
Your journey in Grodno begins at the Grodna Choral Synagogue, built between 1857 and 1861 in a Neo-Romanesque style with Byzantine elements. Its main facade, approximately 18 meters high, testified to an original capacity of 1,200 worshippers. The only synagogue in Grodno to have survived the Shoah, it has been preserved as a museum since 1991 and underwent a major restoration between 2010 and 2015 by the Foundation for the Preservation of Jewish Heritage. As Isaac Bashevis Singer, you seek the first traces of an alliance between communities, a guiding thread in this historic multi-confessional city.
Next, the Cathedral of Saint Francis Xavier reveals another facet of Grodno's heritage. Founded in 1678 as a Jesuit church, it was rebuilt between 1751 and 1760 in a characteristic Baroque style, with an elevation of 45 meters and a facade with two symmetrical towers typical of Lithuanian Baroque. It contains 13 side altars and a historic organ restored in 2004, and has been the seat of the Catholic Diocese of Grodno since 1992. This multi-confessional historic site allows you to understand the influence of Stanisław August Poniatowski, a great patron of the arts and founder of the New Castle, on 18th-century Baroque-Classical architecture.
Your investigation then leads you to the Pokrovsky Cathedral, erected between 1905 and 1912 in Russian-Byzantine style by order of the Russian Empire. Its central dome culminates at 54 meters, and its three golden domes are visible from the left bank of the Neman. Transformed into a museum of religious art in 2004, it houses a tsarist-era iconostasis and is the only major Orthodox cathedral in Grodno to have preserved 85% of its original decor. This site, like the Kołozha Church, a UNESCO World Heritage site since 1992, highlights the architectural richness of the historic city of the Grand Duchy of Lithuania.
Continue your path to the Old Castle of Grodno, founded in the 14th century (1380-1390) and rebuilt by Stephen Báthory between 1580 and 1585. Its brick walls, 2.5 meters thick, and towers 20-25 meters high attest to its importance. It was the seat of the Lithuanian Sejm in 1576, 1578, and 1585, three documented historical sessions. Now an archaeological museum since 1920, it contains 8,000 artifacts from the Middle Ages to the 18th century. Nearby, the New Castle of Grodno, built between 1751 and 1758 for King Stanisław August Poniatowski, illustrates the Baroque-Classical style with its 140 rooms and 120-meter facade, 90% rebuilt after 1944. These state museums are key locations for your investigation into the history of Grodno.
Your journey concludes at the Kołozha Church, founded in the 12th century (1120-1140), the oldest church in Grodno, and a historical monument of Belarus. Its white stone walls, 1.8 meters thick, and its 12-meter nave house partially restored 12th-century frescoes. Your exploration of Grodno, through these monuments, from the Bernardine Monastery with its library of 3,500 manuscripts to the Grodno Fire Tower, an urban symbol since 1860, will have allowed you to reconstruct the "Hidden Pact of Grodno." This thematic circuit offers an interactive visit and a deep understanding of the UNESCO heritage on the left bank of the Neman.
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.
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. »
How does it work?
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.
Want to go deeper?
Places tied to your adventure — optional entries, totally up to you · per person
The Route
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.
How does it work with a group?
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.
- ✓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.
Ready to live this adventure?
Get my code · 12€No calendar booking. Code sent immediately by email.
🔒 Secure payment · Code in 5 min · Free cancellation
Practical info
Why this route?
Unravel a Forgotten Manuscript
Assemble the pieces of an ancient Charter of Coexistence, a testament to Grodno's centuries-old tolerance.
Explore the Coexistence of Fairs
Delve into Grodno's history where Jews, Catholics, and Orthodox shared a common destiny.
Admire a Unique Architectural Heritage
Discover synagogues, cathedrals, and churches, reflections of the city's religious diversity.
Grodno, land of faith and fraternity.
A legacy of coexistence to rediscover.
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
Decipher the centuries-old alliances and secrets carved into the stone of Grodno, a city of a thousand faces where three faiths coexisted for centuries.
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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