Gmunden — Decipher the Lake's Sunken Secret
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Gmunden, Upper AustriaGmunden — Decipher the Lake's Sunken Secret
📍 Gmunden, Upper Austria·🕐 2h – 2h30·📍 ~2.5 km
Also available as:HistoricalFantasyRomanceSupernaturalFairy tale

Gmunden — Decipher the Lake's Sunken Secret

Uncover the truth behind a legendary treasure lost in Traunsee's depths. Follow cryptic clues through Gmunden's historic landmarks to decode the mystery that has haunted the lake for centuries.

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

Difficulty
·From age 12 years
Starting point :Rathaus Square, Gmunden

For over a thousand years, locals whispered of a fortune hidden beneath Traunsee's dark waters—a treasure connected to Schloss Ort, the castle that rises from the lake like a sentinel guarding a dange

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

Gmunden — Decipher the Lake's Sunken Secret

🎭Your Mission

You are Archduchess Louise of Tuscany, an Imperial Habsburg princess, returning to Gmunden in 1865.

Your mission: decipher a family enigma tied to the UNESCO Salzkammergut

Dive into the deep waters of Traunsee, where Gmunden's millennial history still whispers the secrets of a sunken treasure.

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

Gmundner Keramik Manufaktur Museumoptional
€12. Explore 5,000 objects from the 16th century and discover the history of Gmunden's emblematic green faience.
Optionnel
/pers.
Visit Seeschloss Ortoptional
Free outdoor access. Admire this 13th-century castle, first mentioned in 1282, and its unique lakeside setting on the Traunsee.
Optionnel
/pers.
Traunsee Fish Tastingoptional
Various prices. Savor local culinary specialties made with fresh fish caught in the alpine lake Traunsee.
Optionnel
/pers.
Paddle Steamer Ride on Traunseeoptional
€25. Board the historic Gisela ship, commissioned in 1871, for a lake cruise towards Seeschloss Ort.
Optionnel
/pers.
Budget if you do them all / pers.~0

The story that haunts this land

Your journey begins at the foot of Rathaus Gmunden, whose 25-meter-high clock tower dominates the square. This building, originally a bourgeois house from 1654, was transformed into a town hall in 1865, the year of your return. The 18th-century frescoes on its baroque facade depict scenes from Gmunden's history, serving as the official starting point for demonstrations and markets since its inauguration as a town hall. From there, your gaze turns to the Schiffsanlegestelle Gmunden Rathausplatz, the main quay of the Traunsee, 150 meters long, where paddle steamers have docked since 1831. It is here that the historic ship Gisela, commissioned in 1871, has its mooring point, marking the nerve center for lake excursions to Seeschloss Ort, 4 km away, whose silhouette you can glimpse.

Continuing your investigation in Gmunden, you walk along the Esplanade, this 2 km lakeside promenade developed in 1900 along the Traunsee. Restored in 2015 with its LED lighting and local ceramic benches, it offers breathtaking views of Seeschloss Ort, a castle first mentioned in 1282. This place, host to summer festivals since 1920, then leads you to the Evangelische Kirche Gmunden. Built in 1782 under Emperor Joseph II, it symbolizes the religious tolerance of the era. Its classical style and 42-meter bell tower house an organ from 1820, restored in 2005. It is the first Protestant church authorized in Upper Austria after the Counter-Reformation, a landmark in Habsburg history.

Your path then leads you to the Gmundner Keramik Manufaktur. Founded in 1492, this factory is Austria's oldest ceramic producer, annually manufacturing 1.2 million pieces exported to 40 countries. Its on-site museum displays 5,000 objects from the 16th century, and the emblematic green faience, created around 1719, is still produced there. It is a vital link to the artisanal heritage of Upper Austria. Immediately after, you discover the Villa Toscana Gmunden, which you had built in 1861. This neo-Renaissance style residence, with a surface area of 1,200 m² and surrounded by a 3-hectare private park, housed the imperial ceramic collection until 1918. Now a private residence, it is visible from Toscanapark.

Toscanapark Gmunden, created in 1865 around your Villa Toscana, is your next stop. This 2.5-hectare public park features 150百年 trees and a fountain restored in 1925, dedicated to your memory (1845-1925). Clues are hidden among the sculptures and pathways. The route then brings you back to the main quay, the Schiffsanlegestelle Gmunden Rathausplatz, where you again see the historic ship Gisela. This mooring point for navigation on the Traunsee since 1831 is a place of exchange and departure for the Salzkammergut, a UNESCO World Heritage site since 1997. The deep and mysterious waters of the alpine lake Traunsee may hold the treasure you seek, linked to the history of Gmunden ceramics.

This exploration of Gmunden will have led you through the layers of its history, from the baroque architecture of the Rathaus to the innovations of the Gmundner Keramik Manufaktur. Every step in this Upper Austrian town will have brought you closer to the submerged secret of the Traunsee, an alpine lake at the heart of the UNESCO Salzkammergut. You will have traversed centuries, from the factory's founding in 1492 to Joseph II's era of religious tolerance in 1782, up to your own time in 1865. Gmunden's monuments, like Seeschloss Ort, are silent witnesses that have shared their anecdotes, revealing the richness of a heritage often overlooked.

1942
Beginning of Operation Bernhard
1945
Immersion of treasures in Traunsee
1959
Discovery of Operation Bernhard crates

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
Rathaus Square, Gmunden
Directions on Google Maps
🕐
Duration
2h – 2h30
At your own pace
👥
Players
Unlimited
From age 12
📍
Distance
~2.5 km
City center & lakeside
Accessibility
Partial
Flat paths, some inclines
🌐
Languages
17 languages
Built-in translation

Why this route?

🕵️‍♂️

Historical Investigation

Delve into the final days of the Third Reich in Upper Austria.

🏞️

Lakeside Scenery

Admire the beauty of Lake Traunsee while solving the mystery.

📜

Coded Immersion Plan

Decipher fragments of a secret document to locate the treasure.

The past is an enigma, the lake its guardian.

Decipher the submerged legacy.

★ 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 tresor immerge du traunsee? Check the email you received after your game to leave a verified review.

Your turn to play

Dive into the deep waters of Traunsee, where Gmunden's millennial history still whispers the secrets of a sunken treasure.

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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