The Hidden Church Conspiracy — Decode Amsterdam's Secret Faith
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Amsterdam, NetherlandsThe Hidden Church Conspiracy — Decode Amsterdam's Secret Faith
📍 Amsterdam, Netherlands·🕐 2h – 2h30·📍 ~2.5 km
Also available as:HistoricalSpy thrillerMysterySupernatural

The Hidden Church Conspiracy — Decode Amsterdam's Secret Faith

Uncover the clandestine Catholic network hidden in 17th-century Amsterdam. Decipher coded messages left by Jan Hartman's underground church to expose the conspiracy that kept faith alive in plain sight.

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

Difficulty
·From age 12 years
Starting point :Westerkerk (Prinsengracht 281, Amsterdam)

Amsterdam, 1663

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

The Hidden Church Conspiracy — Decode Amsterdam's Secret Faith

🎭Your Mission

You are a confidential agent of William of Orange, operating in Amsterdam during the 17th century's religious turmoil.

Your mission is to map the network of secret churches across the city,

Delve into Amsterdam's secret alleys to unmask the clandestine faith that defied official edicts after the Reformation.

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

Rijksmuseumoptional
€22.50. Explore masterpieces by Rembrandt, Vermeer, and Frans Hals, tracing 800 years of Dutch art and history.
Optionnel
/pers.
Anne Frank Houseoptional
€16. Visit the hiding place of Anne Frank and her family, a poignant testimony to World War II.
Optionnel
/pers.
Stroopwafel Tastingoptional
€5-10. Savor this traditional Dutch waffle filled with caramel syrup, a local delicacy from Amsterdam.
Optionnel
/pers.
Amsterdam Canal Cruiseoptional
€18-25. Discover Amsterdam's historic monuments and UNESCO heritage from the water, offering a unique perspective on the city.
Optionnel
/pers.
Budget if you do them all / pers.~0

The story that haunts this land

Your quest begins in front of the Westerkerk, an imposing Protestant church built between 1620 and 1631, whose 87-meter spire is the tallest in Amsterdam. Designed by city architect Hendrick de Keyser, this Reformed church became a symbol of the Reformation in the Netherlands after 1578, following the confiscation of Catholic places of worship. Here, you seek the first trace of dissent, a subtle message engraved near the tomb of Rembrandt van Rijn (1606-1669), a major painter of the Dutch Golden Age, interred in the church. This is a crucial starting point for understanding the religious duality of the capital of the Netherlands.

A few steps from the Westerkerk, on Westermarkt, you discover the statue of Anne Frank, sculpted by Mari Andriessen in 1960. While not directly linked to the clandestine worship of the 17th century, this work was inaugurated near Anne Frank's hiding place (1942-1944), located 300 meters away at Prinsengracht 263. It embodies the persecution of minorities and resistance to oppression, a poignant echo of the 17th-century Catholics forced into hiding. Nearby, the Homomonument, with its three pink granite triangles laid in 1987, the world's first gay memorial, also recalls the history of persecutions in the historic Jordaan district.

Your itinerary then leads you to Oudezijds Voorburgwal 38, home to the Museum Ons' Lieve Heer op Solder. This historic monument, a clandestine Catholic church, was ingeniously set up around 1663 in the attic of three 17th-century houses. It was Amsterdam's second secret church after the Begijnhof, capable of accommodating up to 150 worshippers on two galleries. Used until 1887, it was transformed into a museum in 1888, becoming the city's second oldest museum after the Rijksmuseum. Here, you examine the central Baroque altarpiece with its painting of the Baptism of Christ and the period organ, searching for clues about the secret life of the faithful.

Continue your investigation towards the Oude Kerk, Amsterdam's oldest church, founded around 1213 with its 14th-century Gothic nave. Confiscated in 1578 during the Reformation, it became Protestant, forcing Catholics to practice their faith in secret. Just 200 meters from the Amstelkring, this church is a pivotal site in Noord-Holland's religious history. Your route then takes you to the Begijnhof, a Beguine court founded in the 14th century. This site housed the first clandestine Catholic chapel after 1578 and preserves eight 14th-century houses, including the secret Houten Huis church from 1475. This place symbolizes Amsterdam's religious tolerance, where private worship was tolerated behind closed doors.

As you complete your journey through the streets of Amsterdam, you have deciphered the codes of an era when faith was lived in the shadows, from the Westerkerk to the Begijnhof, and through Huis Marseille, a patrician house from 1665 on the Keizersgracht canal, transformed into a photography museum in 1999. This complex network of clandestine places of worship and 17th-century merchant residences, like that of the Van Hoorn family, has revealed the richness of the Jordaan's UNESCO heritage. You leave with an understanding of the challenges of religious tolerance and the ingenuity of the Amsterdammers, imbued with the spirit of "Heldhaftig, Vastberaden, Barmhartig" – Valiant, Resolute, Merciful, the motto of the city of Amsterdam.

1929
Anne Frank is born in Frankfurt.
1942
The Frank family goes into hiding in the Secret Annexe.
1944
Occupants of the Annexe are arrested.

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
Westerkerk (Prinsengracht 281, Amsterdam)
Directions on Google Maps
🕐
Duration
2h – 2h30
At your own pace
👥
Players
Unlimited
From age 12
📍
Distance
~2.5 km
Jordaan & Canal Belt
Accessibility
Partial
Cobblestone streets, bridges & stairs
🌐
Languages
17 languages
Built-in translation

Why this route?

💪

Courage of the Righteous

Explore iconic locations where ordinary citizens displayed extraordinary bravery.

📖

Memory of the Annexe

Delve into Anne Frank's story and the network that tried to protect her, beyond the words of her diary.

🕵️

Traces of Resistance

Decipher the codes and clues left by the underground network to thwart the Nazi hunt.

Hope, even in the deepest darkness.

Every step reveals the strength of an unshakeable network.

★ 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 Amsterdam's secret alleys to unmask the clandestine faith that defied official edicts after the Reformation.

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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