Altstadt — Uncover the Nazi Gold Trail
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Historic and financial heart of ZurichAltstadt — Uncover the Nazi Gold Trail
📍 Historic and financial heart of Zurich·🕐 2h30 – 3h·📍 ~3 km
Also available as:HistoricalMysterySpy thrillerCinema

Altstadt — Uncover the Nazi Gold Trail

Decipher coded bank records and expose a hidden Nazi gold laundering conspiracy buried in Zurich's medieval vaults during WWII. Uncover the truth before it vanishes.

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

Difficulty
·From age 14 years
Starting point :Bürkliplatz

Summer 1943

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

Altstadt — Uncover the Nazi Gold Trail

🎭Your Mission

You are a Swiss archivist, commissioned in 1962, tasked with unraveling the 'Zürcher Goldaffäre,' a post-World War II gold trafficking affair.

Your mission leads

Delve into Zurich's alleyways, where whispers of a 1962 recycled Nazi gold affair still echo, following in the footsteps of bankers and reformers.

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

Swiss National Museumoptional
10-15 CHF. Explore Swiss history and culture, from prehistory to the present day, with exhibitions on art, crafts, and archaeology.
Optionnel
/pers.
Kunsthaus Zurichoptional
20-25 CHF. Admire an art collection spanning from the Middle Ages to contemporary art, including works by Monet, Picasso, and Chagall.
Optionnel
/pers.
Zunfthaus zur Waagoptional
Various prices. Savor traditional Swiss specialties in a former 14th-century guild house, with views of the Limmat.
Optionnel
/pers.
Lake Zurich Cruiseoptional
10-20 CHF. Enjoy a different perspective of Zurich city and its surrounding alpine landscapes from the waters of the lake.
Optionnel
/pers.
Budget if you do them all / pers.~0

The story that haunts this land

Your investigation begins at Bürkliplatz, a public square developed between 1880 and 1881 during the expansion of Zurich's lake quay. Named after State Councillor Ferdinand Wilhelm Burkli, this 12,000 m² area became a departure point for boats on Lake Zurich from 1882. It also served as a historical site for popular demonstrations, notably during the general strike of 1918, a prelude to the social and economic tensions that would mark the 20th century and set the stage for affairs like the gold scandal. Zurich's secrets begin here, beneath your feet, near the calm waters of the lake, where political and financial decisions often intersected.

Walking along Stadthausquai, you arrive in front of the City Hall (Stadthaus), a late Baroque edifice built between 1693 and 1698 by Hans Jakob Baur. Its facade, adorned with 13 allegorical statues 2.5 m high sculpted by Jeremias Bauschulte in 1698, represents the civic virtues that were meant to guide the Zurich cantonal government, which has been its seat since 1698. This building, with its 300 m² council chamber, embodies Zurich's stability and power, qualities that also allowed the city to become an international financial center, capable of managing complex, sometimes obscure, money flows, such as those you are investigating.

Your route then takes you to Bahnhofstrasse, a shopping street created between 1864 and 1867 after the medieval city moats were filled in. 600 m long, it is considered one of the most expensive streets in the world, with average rents reaching 15,000 CHF/m²/year in 2023. It was here, at the heart of this opulence, that the 'Zürcher Goldaffäre' erupted in 1962, revealing a post-World War II recycled Nazi gold trafficking. Bahnhofstrasse, though modern, testifies to the financial stakes that have shaped the history of Zurich and Switzerland, a Swiss Historical Monument ISOS and a Cultural Property of National Importance.

Ascending Rennweg, a medieval paved road dating from the 13th century and an integral part of the Altstadt's ramparts, you take a leap into Zurich's past. Formerly a horse racing street until the 17th century, 8 m wide and lined with Renaissance arcades, it houses 15th-century patrician houses, including the Haus zum Rüden built in 1530. This historic path reminds you that the city is not just a financial hub, but also a place of deep history, where Ulrich Zwingli, Protestant reformer (1484-1531), left his mark, and where figures like Hans Waldmann (1435-1489), mayor of Zurich, left their imprint.

Your investigation concludes near the Grossmünster, this Romanesque church founded around 1100 with its twin towers completed in 1220, soaring to 65 m. The seat of the Protestant Reformation in Zurich in 1523 under Ulrich Zwingli, and adorned with stained-glass windows by Sigmar Polke installed in 2009 over 120 m², it symbolizes the conscience and morality that have often guided, or sometimes been tested by, Zurich's history. This journey through Switzerland's Cultural Properties of National Importance will have allowed you to connect the facts of the 'Zürcher Goldaffäre' to Zurich's rich historical and architectural heritage, a city that has always managed to preserve its secrets while revealing itself to those who dare to seek.

1938
Anschluss and beginning of spoliation
1940
Reichsbank Gold Transits through Switzerland
1995
Revelations about dormant funds

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€

No calendar booking. Code sent immediately by email.

🔒 Secure payment · Code in 5 min · Free cancellation

Practical info

Starting point
Bürkliplatz
Directions on Google Maps
🕐
Duration
2h30 – 3h
Fast paced
👥
Players
2 to 5
From age 14
📍
Distance
~3 km
Along the Limmat riverbanks
Accessibility
Full
Obstacle-free route
🌐
Languages
17 languages
Built-in translation

Why this route?

🕵️‍♂️

Wartime Espionage

Infiltrate a spy network and unmask double agents.

💰

Dark Finance

Explore the mechanisms of money laundering and Nazi gold.

📝

Secret Register

Reconstruct a coded register to reveal explosive truths.

Neutrality can be a cover, but the truth always surfaces eventually.

Dismantle a money laundering network and expose dirty war money.

★ 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

Delve into Zurich's alleyways, where whispers of a 1962 recycled Nazi gold affair still echo, following in the footsteps of bankers and reformers.

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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