Ixelles — Horta's Secret Imprint
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Ixelles, Brussels, BelgiumIxelles — Horta's Secret Imprint
📍 Ixelles, Brussels, Belgium·🕐 2h30 – 3h·📍 ~3.5 km
Also available as:HistoricalMysteryRomanceCinema

Ixelles — Horta's Secret Imprint

Track Victor Horta's hidden symbols across Ixelles' Art Nouveau gems. Decipher the master's encrypted philosophy before his visionary blueprint fades forever.

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

Difficulty
·From age 12 years
Starting point :Hôtel Tassel, Rue Paul-Émile Janson 6, 1050 Ixelles

In the heart of Ixelles, Victor Horta revolutionized architecture with his Art Nouveau masterpieces, embedding a secret language of curves, vines, and symbols into every facade and interior

8
stages
~3.5 km
route
2h30 – 3h
at your pace
🚶
walking

Ixelles — Horta's Secret Imprint

🎭Your Mission

You are a budding architect in Brussels, 1905, tasked with finding Victor Horta's lost sketches, whose work defined Art Nouveau in the city.

Your mission begins at the Hôtel

Immerse yourself in the heart of Brussels-Ixelles to decipher the secret imprint of Victor Horta, the undisputed master of Art Nouveau.

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

Horta Museumoptional
€10. Visit the interior of Victor Horta's house-studio, with its 37 restored rooms and original 1901 kitchen.
Optionnel
/pers.
Hôtel Solvayoptional
€15. Discover the 48 rooms adorned with Tiffany stained glass and mosaics of this UNESCO site, occasionally open to the public.
Optionnel
/pers.
Place Flagey Marketoptional
Free access. Enjoy the atmosphere of Flagey's iconic markets, established since 1925, near the Ixelles Town Hall.
Optionnel
/pers.
Visit of Ixelles Town Halloptional
Free. Admire the late Art Deco architecture of this 1931-1938 building, with its 72-meter-high tower, classified in 1994.
Optionnel
/pers.
Budget if you do them all / pers.~0

The story that haunts this land

Your quest for Brussels' major Art Nouveau heritage begins at the Hôtel Tassel, built in 1893 by Victor Horta. This iconic building, designated a UNESCO World Heritage site in 2000, was commissioned by Professor Octave Tassel, a pioneer in integrating iron and glass around a central staircase. In 1991, it was recognized as a Belgian historical monument, marking Horta's first major commission at just 32 years old. This essential starting point in Ixelles immediately immerses you in the architectural audacity of the period, laying the groundwork for exploring Horta's houses in Brussels.

Continue your itinerary to the Maison Ciamberlani, built in 1897 at 24 Rue Defacqz, 1060 Saint-Gilles, by Gustave Strauven, a pupil of Horta. Its facade, adorned with wrought iron and sgraffiti, was restored in 2000 thanks to regional subsidies, demonstrating Brussels' commitment to its heritage. Residence of artist Alexis Ciamberlani, a collector of Symbolist works, this house, classified in 1986, exemplifies late Art Nouveau with its floral relief motifs, offering a fascinating contrast to Horta's work and highlighting the stylistic diversity of the era.

Your exploration then leads you to the Hôtel Solvay, built between 1894 and 1900 by Victor Horta for the industrialist Armand Solvay, Rue de la Reine 224, 1050 Ixelles. With its 4000 m² and 48 rooms adorned with Tiffany stained glass and mosaics, this residence has been a UNESCO World Heritage site since 2000. The interior, superbly preserved since 1993, is occasionally open to the public, offering a rare glimpse into the opulence of the period. In 2015, the Brussels-Capital Region acquired this property, ensuring the longevity of this Belgian historical monument.

The journey continues to the Horta Museum, Victor Horta's former house-studio (1898) located at Rue Américaine 25, 1060 Saint-Gilles. Inaugurated as a museum in 1969 after its acquisition by the City in 1960, it features 37 restored rooms, including an original kitchen with its 1901 majolica tiling. Classified as a monument in 1953 and a UNESCO site in 2000, this museum, which welcomes approximately 5000 visitors per year by reservation, offers a direct immersion into the intimacy and genius of the architect, a must-see for understanding Art Nouveau in Brussels.

Finally, your Art Nouveau circuit in Brussels leads you to discover the Maison Hannon, built in 1903 by Jules Brunfaut at 96-98 Avenue de la Jonction, 1060 Saint-Gilles. Its asymmetrical facade, combining bricks and blue stone, is adorned with female sculptures, reflecting another facet of the movement. Residence of architect Édouard Hannon, it has become a cultural center since 1993. Classified in 1993 and restored between 1995 and 2001 with particular attention to Art Nouveau photography, this house enriches your understanding of Brussels' heritage and the multiple expressions of this timeless style.

1893
Completion of Hôtel Tassel, birth certificate of Art Nouveau.
1895
Start of construction of Hôtel Solvay, a Horta masterpiece.
1906
Victor Horta becomes director of the Royal Academy of Fine Arts in Brussels.

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
Hôtel Tassel, Rue Paul-Émile Janson 6, 1050 Ixelles
Directions on Google Maps
🕐
Duration
2h30 – 3h
At your own pace
👥
Players
Unlimited
From age 12
📍
Distance
~3.5 km
Ixelles & Saint-Gilles
Accessibility
Partial
Some cobblestones and narrow sidewalks
🌐
Languages
17 languages
Built-in translation

Why this route?

🎨

Decipher the Organic Alphabet

Explore the curves and counter-curves of Art Nouveau facades to reveal hidden messages in the works of master Horta and his contemporaries.

🌸

Track Natural Motifs

Nature is at the heart of Art Nouveau. Spot stylized flowers, leaves, and animals adorning balconies and sgraffito, true clues for your quest.

📐

Unveil the Secret Geometry

Beyond ornamentation, a mathematical structure guides Horta's aesthetic. Unveil the ratios and numbers that underpin the beauty of his creations.

Decipher the original plan.

Art Nouveau, more than a style, a secret language.

★ 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

Immerse yourself in the heart of Brussels-Ixelles to decipher the secret imprint of Victor Horta, the undisputed master of Art Nouveau.

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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