Soignies — Secret of the Blue Stone
From12€

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

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Soignies, WalloniaSoignies — Secret of the Blue Stone
📍 Soignies, Wallonia·🕐 2h – 2h30·📍 ~2.8 km
Also available as:HistoricalFantasySupernaturalMystery

Soignies — Secret of the Blue Stone

Uncover the hidden conspiracy behind Soignies' Blue Stone quarries. Decode ancient symbols carved into landmarks to expose a 19th-century plot that vanished a master's final masterpiece and fortune.

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

Difficulty
·From age 12 years
Starting point :Place Verte, Soignies

In the heart of Soignies, the Blue Stone—known as Petit Granit—has shaped empires for centuries, quarried from depths holding secrets 350 million years old

8
stages
~2.8 km
route
2h – 2h30
at your pace
🚶
walking

Soignies — Secret of the Blue Stone

🎭Your Mission

You are Charles de Croy, Count of Chimay and a dedicated patron of local quarries in 16th-century Soignies, seeking the ideal stone vein for your next grand constructions.

Your

Uncover the ancient secrets of Soignies Blue Stone, the material that has shaped the face of Wallonia from the Middle Ages to today.

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

Stone Museum in Soigniesoptional
€5. Explore the geological and industrial history of Soignies Blue Stone, with ancient tools and quarry samples.
Optionnel
/pers.
Visit Hainaut Quarriesoptional
€12. Discover modern extraction techniques and the scale of Wallonia's Petit Granit deposits on a guided tour.
Optionnel
/pers.
Tasting of local beer 'La Montoise'optional
Optionnel
/pers.
Walk in the Bois de la Houssièreoptional
Free. A protected natural area ideal for a relaxing walk after your urban exploration of Soignies' heritage.
Optionnel
/pers.
Budget if you do them all / pers.~0

The story that haunts this land

Your quest for the Secret of the Blue Stone begins in Soignies' Place Verte, the historic heart of the city. Since the Middle Ages, this central square has been the gathering point for many local events, and it is surrounded by buildings made of local blue stone. These stones, extracted from nearby quarries since the 19th century, give you a first glimpse of the raw material that made Soignies and Wallonia famous. Here, you collect the initial clues about the economic and architectural importance of Wallonia's Petit Granit.

As you head towards the Collegiate Church of Saint-Vincent, a Romanesque edifice built between 1030 and 1040, and classified as a major heritage site of Wallonia, you grasp the scale of local craftsmanship. Its 75-meter-high bell tower, one of Belgium's tallest, dominates the landscape, and its facades are entirely made of Soignies blue stone. It is here that Pierre le Bon, Prince-Bishop of Liège, could have admired the mastery of 11th-century builders, making this collegiate church a lasting testament to the use of blue stone.

Your journey then leads you to the Soignies Town Hall, a neoclassical building erected in 1784. This administrative center, with its local blue stone facade, illustrates the evolution of Soignies' architecture in the 18th century. Next, the Maison du Bailliage, the former residence of the seigniorial representative dating from the 17th century, offers a glimpse into Flemish Renaissance architecture, also adorned with carved blue stone elements, bearing witness to the princely judicial system under the Counts of Hainaut.

The Old Palace of Justice, built around 1830 after Belgian independence, and the Château de la Rocq, rebuilt in 1865 on 13th-century medieval foundations, continue to reveal the many facets of Soignies Blue Stone. The Palace of Justice, used for civil and criminal courts until the 20th century, incorporates blue stone for its foundations. The Château de la Rocq, with its facades blending brick and locally extracted blue stone, and its 2-hectare park, demonstrates the persistence of this material in prestigious constructions.

Your exploration concludes in Place du Perron, where the perron, a symbolic column of communal power erected in 1619, awaits you. Classified as a historical monument since 1952, it is surrounded by 17th-18th century gabled houses, all made of blue stone. This circuit will have allowed you to delve into the heart of Soignies' heritage, to understand the importance of Soignies Blue Stone, and to discover an essential part of Wallonia's history, its builders, and its communal liberties.

1661
Louis XIV begins the expansion of Versailles, leading to a massive demand for materials.
1669
Creation of the Royal Mirror Manufactory of Saint-Gobain, an example of Colbert's industrial policy to reduce import dependency.
1682
The Court moves to Versailles, marking the pinnacle of the architectural project and the use of prestigious materials.

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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🔒 Secure payment · Code in 5 min · Free cancellation

Practical info

Starting point
Place Verte, Soignies
Directions on Google Maps
🕐
Duration
2h – 2h30
At your own pace
👥
Players
Unlimited
From age 12
📍
Distance
~2.8 km
Historic center
Accessibility
Partial
Some cobblestones and slight slopes
🌐
Languages
17 languages
Built-in translation

Why this route?

💎

The Royal Stone

Uncover the secrets of the blue stone, noble material of the greatest constructions.

⚜️

The Versailles Trade

Decipher the stakes of a trade network that linked Soignies to the court of Louis XIV.

📜

A Forgotten Architect's Plan

Reconstruct a key document that reveals the unsuspected role of the city in French history.

The grandeur of an empire is also built with stone from elsewhere.

Unveil the secret of the blue stone that connects Soignies to Versailles.

★ 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

Uncover the ancient secrets of Soignies Blue Stone, the material that has shaped the face of Wallonia from the Middle Ages to today.

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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