Baden's Hidden Accord — Uncover the Congress Secret
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Baden bei Wien, Lower AustriaBaden's Hidden Accord — Uncover the Congress Secret
📍 Baden bei Wien, Lower Austria·🕐 2h – 2h30·📍 ~2.5 km
Also available as:HistoricalMysteryRomanceSpy thriller

Baden's Hidden Accord — Uncover the Congress Secret

Decipher a suppressed diplomatic protocol from the Congress of Vienna hidden within Baden's spa district. Uncover why this agreement was erased from history.

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

Difficulty
·From age 12 years
Starting point :Kaiserhaus, Hauptplatz 18, 2500 Baden bei Wien, Austria

In 1815, the great powers convened at the Congress of Vienna to reshape Europe after Napoleon's fall

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

Baden's Hidden Accord — Uncover the Congress Secret

🎭Your Mission

You are an imperial archivist, personally dispatched by Klemens Wenzel von Metternich in 1815, tasked with retrieving the missing pieces of a secret protocol from the Congress

Immerse yourself in the heart of Baden bei Wien, following the forgotten diplomatic agreement that reshaped post-Napoleonic Europe.

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

Beethovenhaus Museumoptional
€12. Visit the house where Ludwig van Beethoven composed parts of his 9th Symphony between 1821 and 1823, and discover his original manuscripts.
Optionnel
/pers.
Arnulf Rainer Museumoptional
€10. Explore the contemporary art collections dedicated to Arnulf Rainer, a pioneering Austrian informal artist, in a 19th-century building.
Optionnel
/pers.
Local Wine Tastingoptional
€25. Participate in a guided tasting of regional Lower Austrian wines, renowned for their Grüner Veltliner and Zweigelt grape varieties.
Optionnel
/pers.
Boat Ride at Doblhoffparkoptional
€5. Rent a paddle boat to navigate the ponds of Doblhoffpark, a public park created in 1817, and admire the swans and exotic vegetation.
Optionnel
/pers.
Budget if you do them all / pers.~0

The story that haunts this land

Your quest begins at the Kaiserhaus, Hauptplatz 18, a former imperial residence built in the 18th century. This is where the Habsburg family, including Emperor Franz I of Austria, stayed during their spa visits to Baden. The classical facade, restored in the 19th century, was the starting point for imperial strolls. It was within these walls that Metternich is believed to have held discreet meetings, preparing for the negotiations of the 1815 Congress of Baden. This dwelling testifies to the strategic importance of Baden bei Wien in Viennese court life and marks the beginning of your exploration of Habsburg heritage.

Continue to the Hauptplatz, the historic center of Baden bei Wien since the Middle Ages, a place of political and commercial gathering. The Town Hall (Rathaus), built in 1886 in Neo-Renaissance style, dominates the square. In the center, the Tritonbrunnen (Triton Fountain), installed in the 19th century, symbolizes the thermal prosperity of this Central European spa destination. It was in this square that the delegations of the Congress of Baden, including Metternich, passed during the post-Napoleonic negotiations, seeking to stabilize Europe. Nearby, the Kongressdenkmal commemorates the 1815 peace agreement, recalling Baden's diplomatic importance.

Your itinerary then leads you to the Beethovenhaus, Rathausplatz 10. Ludwig van Beethoven stayed here between 1821 and 1823, a period during which he composed the 9th Symphony and passages of the unfinished 10th Symphony, as well as the Missa Solemnis. Converted into a museum in 1954, the site preserves manuscripts and personal belongings of the composer. This house makes Baden bei Wien, alongside Vienna, a 19th-century European cultural center. It is a key point for understanding the cultural richness of Lower Austria beyond its diplomatic role.

Nearby, the Pfarrkirche St. Josef, built in 1860-1863 in Neo-Gothic style, replaced a medieval chapel. Its tower, approximately 60 meters high, is visible from the Hauptplatz. The interior, adorned with 19th-century stained-glass windows and restored Baroque altars, hosted many official ceremonies during Baden's spa era. Further on, Doblhoffpark, created in 1817 by the Doblhoff family, offers 6 hectares designed in English style. With its winding paths and the 19th-century Ruïnentheater, it was a place for aristocratic strolls during the Belle Époque, illustrating the tourist development of this historic Austrian spa town.

Finally, your journey concludes with the Arnulf Rainer Museum, Elisabethstrasse 14, housed in a historic 19th-century building and dedicated to Austrian artist Arnulf Rainer (1929-2020), a pioneer of informal art. This contemporary art museum, with its permanent collections and temporary exhibitions since 1990, represents the cultural continuity of Baden bei Wien beyond its thermal past. To finish, Schloss Weilburg, an 18th-century castle on the outskirts, with its 8 hectares of gardens, embodies the aristocratic heritage of Lower Austria. Your archivist mission will have introduced you to the history of Baden bei Wien, its monuments, and its key role in the 1815 Congress of Baden, revealing an Austrian cultural asset of unsuspected richness.

1814
Opening of the Congress of Vienna
1815
Napoleon escapes from Elba
1815
Signing of the Congress's Final Act

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
Kaiserhaus, Hauptplatz 18, 2500 Baden bei Wien, Austria
Directions on Google Maps
🕐
Duration
2h – 2h30
At your own pace
👥
Players
Unlimited
From age 12
📍
Distance
~2.5 km
Historic center of Baden
Accessibility
Partial
Parks and cobbled streets
🌐
Languages
17 languages
Built-in translation

Why this route?

🤫

Secret Diplomacy

Delve into the hidden intrigues and negotiations that shaped post-Napoleonic Europe, away from prying eyes.

👑

Imperial Legacy

Follow in the footsteps of emperors and archdukes who stayed in Baden, leaving their mark on history.

🌳

Gardens and Thermal Baths

Explore elegant parks and the remnants of thermal culture that served as settings for diplomatic encounters.

The balance of power is never set in stone.

In Baden, Austria tried to seal a destiny.

★ 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

Soyez le premier à partager votre expérience.

Did you play le protocole oublie de baden? Check the email you received after your game to leave a verified review.

Your turn to play

Immerse yourself in the heart of Baden bei Wien, following the forgotten diplomatic agreement that reshaped post-Napoleonic Europe.

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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