Graz — Johann's Secret Legacy
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Historic center of GrazGraz — Johann's Secret Legacy
📍 Historic center of Graz·🕐 2h30 – 3h·📍 ~2.8 km
Also available as:HistoricalMysteryRomanceSpy thrillerCinema

Graz — Johann's Secret Legacy

Uncover Archduke Johann's hidden legacy: forgotten plans concealed in Graz's landmarks. Decipher clues across the Old Town to expose his visionary secret before it's lost forever.

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

Difficulty
·From age 12 years
Starting point :Hauptplatz, Graz

In the heart of 19th-century Graz, Archduke Johann, the 'People's Archduke,' dreamed of a radical transformation for his beloved Styria

8
stages
~2.8 km
route
2h30 – 3h
at your pace
🚶
walking

Graz — Johann's Secret Legacy

🎭Your Mission

You are a trusted imperial archivist from the Habsburg court, dispatched to Graz in the mid-19th century, on a secret mission to decipher 'Johann's Secret Legacy'.

Your quest begins on

Dive into the heart of Graz, Styria's capital, following the footsteps of Archduke Johann, an emblematic figure whose legacy shaped the city.

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

Universalmuseum Joanneumoptional
€12. Explore the natural history and ethnography collections founded by Archduke Johann in 1811, featuring over 3 million objects.
Optionnel
/pers.
Graz Castle Museum (Schloss Graz)optional
€8. Visit the former princely residence and admire the 'Grazer Doppelwendeltreppe', the unique double spiral staircase dating from 1499.
Optionnel
/pers.
Kürbiskernöl (Pumpkin Seed Oil) Tastingoptional
Free to €5. Taste this emblematic Styrian product in one of Graz's markets, such as the Bauernmarkt am Kaiser-Josef-Platz.
Optionnel
/pers.
Schlossberg Funicular Rideoptional
€2.50 (one-way). Enjoy a quick ascent and breathtaking views of Graz from the top of the hill.
Optionnel
/pers.
Budget if you do them all / pers.~0

The story that haunts this land

Your adventure begins on Graz's Hauptplatz, a vast 14,000 m² square surrounded by buildings from the 15th to 19th centuries. In the center, the Erzherzog-Johann-Brunnen (Archduke Johann Fountain), inaugurated in 1878, pays tribute to Archduke Johann of Habsburg (1782-1859), whose role was paramount for Styria. Facing you stands the City Hall (Rathaus), rebuilt between 1887 and 1893 in a Neo-Renaissance style, with its imposing 60-meter-wide facade, a testament to Graz's civil power, a City of Human Rights since 1999. It is here, in the heart of Graz's historic city center, a UNESCO World Heritage site since 1999, that the first clues of your historical treasure hunt await you.

Just 200 meters from Hauptplatz, on Herrengasse, the Landhaus reveals the splendor of the Renaissance. Built between 1557 and 1565, this palace now houses the regional government of Styria. Its facade is adorned with 225 sculpted busts of Styrian notables, a unique architectural feature in Central Europe. Its inner courtyard, with three-story arcades and dimensions of 45m x 35m, transports you to the 16th century. Nearby, the Joanneumsviertel, a museum complex created by Archduke Johann in 1811, invites you to explore the collection of over 3 million historical and scientific objects he assembled, showcasing the Archduke's passion for knowledge.

Continuing your urban journey in Graz, you take Sporgasse, a medieval cobbled street dating from the 12th-13th centuries. Four to five meters wide, it is lined with restored Renaissance and Baroque houses, with 15th-century commercial arcades. This pedestrian street, preserved since 1970, retains its intact historic layout and leads you towards Schlossberg hill. You then reach the Burgtor, a 16th-century fortified gate with 1.5-meter-thick walls, a necessary passage to access Schloss Graz, a former medieval fortress transformed into a princely residence in the 15th-16th centuries.

At the top of Schlossberg, the Uhrturm (Clock Tower), a 15th-century medieval watchtower, stands 28 meters high. A symbol of Graz, it offers panoramic views of the city and the Styria region. Its clock, dating from 1712, has the peculiarity of having inverted hands (the hour hand is longer than the minute hand). Four hundred meters southeast of Hauptplatz, Schloss Graz, now a regional museum, housed Archduke Ferdinand II (1529-1595) in the 16th century. He accumulated curiosities there, in the tradition of the great collectors of his time. It is here that you discover the 'Grazer Doppelwendeltreppe', a unique double spiral staircase dating from 1499, allowing people to ascend and descend without crossing paths.

Your exploration of Graz's Renaissance and Baroque heritage concludes by crossing the Erzherzog-Johann-Brücke (Archduke Johann Bridge). This 19th-century stone bridge, built between 1875 and 1877, spans the Mur River for 85 meters long and 12 meters wide. Adorned with sculptures dedicated to Archduke Johann, it offers a strategic viewpoint over the urban landscape. This historical treasure hunt will have led you through a preserved medieval quarter, offering an interactive visit to Graz and its protected historical monuments. You leave with an in-depth knowledge of Archduke Johann of Habsburg and the history of Styria, far beyond what a simple tourist visit could offer.

1782
Birth of Archduke Johann in Florence, beginning a life dedicated to progress.
1811
Founding of the Joanneum in Graz, a key institution for science and culture.
1829
Morganatic marriage to Anna Plochl, an act of defiance against imperial conventions.

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
Hauptplatz, Graz
Directions on Google Maps
🕐
Duration
2h30 – 3h
At your own pace
👥
Players
Unlimited
From age 12
📍
Distance
~2.8 km
Historic center
Accessibility
Partial
Schlossberg ascent, cobblestones
🌐
Languages
17 languages
Built-in translation

Why this route?

⚛️

Science & Innovation

Discover the pioneering spirit of Archduke Johann, a fervent promoter of science and industrialization in Styria.

📜

Secret Archives

Unravel the mysteries of an audacious plan, hidden by the Archduke for the future of his beloved region.

🏔️

Styrian Landscapes

Explore the historic streets and iconic viewpoints of Graz, in the heart of the Styria Johann so loved.

The future belongs to those who dare to dream it, and build it.

— Archduke Johann

★ 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

Dive into the heart of Graz, Styria's capital, following the footsteps of Archduke Johann, an emblematic figure whose legacy shaped the city.

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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