Książ Castle — Uncover Riese's Gold Secrets
Unravel the Nazi enigma of Project Riese at Książ Castle. Hunt for clues to the buried gold train and secret tunnels in this shadowy WWII conspiracy.
📱 1 to 10 phones · 1 team per phone · Independent codes
In the Owl Mountains near Wałbrzych, the Nazis launched Project Riese in 1943—their colossal, unfinished underground empire beneath Książ Castle
Książ Castle — Uncover Riese's Gold Secrets
You are an Organisation Todt engineer on a secret mission to Książ in October 1944.
You arrive at Brama Hochbergów, the last access gate to the Hochberg
Follow the trail of the mysterious Project Riese, the Nazi underground complex from 1943-1945 that was meant to transform Książ Castle into Hitler's headquarters.
The story that haunts this land
Książ begins your investigation with Brama Hochbergów, this 19th-century neo-Gothic gate that marked the entrance to the Hochberg family estate. Hans Heinrich XVII Hochberg, last owner of the castle, sees his lineage end brutally in 1944 when the Nazis seize the domain for Project Riese. This gate, witness to three centuries of aristocratic history, becomes the main access to the underground mysteries you will discover in the surrounding gardens and terraces.
Książ Castle reveals its most buried secrets: built in the 13th century then enlarged by the Hochbergs in the 18th century, it now hides a network of two-level tunnels dug between 1943 and 1945. The first level, 15 meters deep, houses a concrete-reinforced tunnel of 80 meters leading to a 35-meter elevator shaft. Hermann Giesler, Nazi architect, directed the castle's adaptation to make it Hitler's presumed headquarters, a titanic project left unfinished at German defeat.
The Tarasy Zamku Książ, terraces built in the 19th century under Hochberg direction, offer panoramic views over the Bystrzyca valley and Owl Mountains. These landscaped gardens hide the accesses to Project Riese underground tunnels, transforming this aristocratic promenade site into a Nazi strategic location. During the Spring Festival of Flowers and Art, these terraces resume their cultural vocation, masking the scars of military history buried beneath your feet.
The Ścieżka Hochbergów, historic path named after the dynasty, crosses the gardens over 1 to 2 kilometers connecting Brama Hochbergów to the castle. This pedestrian route now integrates thematic visits on Project Riese history, revealing how a centuries-old family domain transformed into a secret military construction site. The Punkt Widokowy na Zamek Książ, accessible in less than a kilometer from the entrance gate, becomes the ideal observation post to understand the geographical scope of the Nazi underground complex.
The Pomnik Ofiar Riese closes your route with tribute to the thousands of prisoners who died during construction of the seven underground complexes of Project Riese between 1943 and 1945. Located near pedestrian paths linking the castle to unfinished tunnels, this monument reveals the tragic human dimension behind Nazi architectural ambition. You leave Książ with complete understanding of a site where Polish aristocratic history and Third Reich military secrets overlap in the Silesian landscape, unique testimony to 20th century European upheavals.
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.
At each stop, places ordinary guides miss — secret façades, sculpted crests, alleys steeped in history.
Every riddle is rooted in a real historical fact or local legend. You leave with dozens of stories to tell.
Learn to read buildings — flamboyant Gothic, Baroque, Art Deco — like a real art historian, while having fun.
Walk through the city like a novel's character — every alley becomes a stage, every square a theatre.
A voice walks with you at every step, tells the story of each place, reads clues, adds a cinematic feel.
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?
Explore the city on foot solving puzzles based on real historical facts. No locked room — the city is your playground.
No app to download. Play directly from your browser. Guided step by step, at your own pace.
One purchase per phone is enough. Play with family, friends or as a couple — everyone participates.
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.
Stuck? Progressive personalised hints. The character repeats the puzzle on demand — at your own pace.
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
The Route
8 stages through the city
The gameplay: AR, camera, hidden clues
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.
How does it work with a group?
One phone = one team. Pick the number at checkout (1 to 10).
Solo, or a group sharing the screen. One team, one code.
Family, couple, or 2-3 teams competing. Each phone has its own code and its own score.
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.
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
Why this route?
Historical Investigation
Uncover the secrets of the largest unfinished Nazi project.
Underground Tunnels
Explore the vicinity of a labyrinth carved into the rock by thousands of prisoners.
Natural Setting
Wander through the forests and valleys of Lower Silesia, silent witnesses to history.
The shadow of the mountain guards its secret.
Unveil the final plan of Operation Riese.
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.
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Your turn to play
Follow the trail of the mysterious Project Riese, the Nazi underground complex from 1943-1945 that was meant to transform Książ Castle into Hitler's headquarters.
1 purchase = 1 phone. Play several on the same device.
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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