The Sons of the Castro
From Celts to oyster farmers: Vigo through the ages
📱 1 to 10 phones · 1 team per phone · Independent codes
Before being Spain's largest fishing port, Vigo was a Celtic castro perched on a hill. Its inhabitants already watched the sea. Some of their stones are still there.
From the Celtic castro to the oyster market: 3,000 years in one walk
Monte do Castro, a wooded hill in the heart of Vigo, was first a fortified Celtic village (castro) 3,000 years ago. Then a Roman citadel, then a medieval castle. Now a public park, it preserves vestiges of all these eras. Descending towards the port, you cross the Casco Vello — the old fishermen's quarter — to Oyster Street where oyster farmers still open oysters on wooden barrels, as in the 19th century.
« "In Vigo, the sea isn't a landscape. It's a pantry. The Celts already knew that." »— — Facing the Rúa das Ostras, a barrel of oysters and a glass of Albariño
From castro to oyster farming: Vigo, daughter of the sea
Vigo's first inhabitants settled on Monte do Castro around 1000 BC. This castro (fortified Celtic village) dominated the estuary and its marine resources. The Celts lived from fishing, herding and tin trading. The remains of their circular stone houses are still visible on the hill.
The Romans took the castro in the 1st century BC and founded Vicus Spacorum, a small port on the tin route. In the Middle Ages, Vigo remained a modest fishing village, fortified against Viking and Saracen raids. It was only in the 19th century that canning and oyster farming launched the city's growth.
Today, Vigo is Spain's top fishing port and one of Europe's largest. But in the Casco Vello, the stepped lanes, galleried houses and Rúa das Ostras preserve the old port's atmosphere. Oyster Street's farmers carry on a 19th-century tradition — oysters opened on barrels, washed down with Albariño.
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
5 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?
Celtic castro
Discover the remains of a 3,000-year-old fortified village in the heart of Vigo.
Oysters & Albariño
The game ends with a tasting on Rúa das Ostras.
Galician galleries
Learn to read these glazed balconies that are Galician architecture's signature.
Park & panoramas
Monte do Castro offers the best views of the estuary and Cíes Islands.
3,000 years of sea. From Celts to oyster farmers. One single hill.
Descend from the Celtic castro to Rúa das Ostras — and taste history.
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
Q01Is this an outdoor escape game in Vigo · Monte do Castro & Casco Vello or a classic scavenger hunt?
Both at once: it's an outdoor escape game — team puzzles, narration, clues, final code — but in the streets of Vigo · Monte do Castro & Casco Vello, at your pace. The classic scavenger hunt mechanic plus augmented reality through the camera.
Q02How long does it take to finish The Sons of the Castro?
Plan 1 h 30 to 2 h 30 depending on your pace. Some finish in 1 h 10, others take 3 h in slow-mode. No pressure: the clock only counts for the leaderboard, you play at your tempo.
Q03Do we need to be several people to enjoy it?
No, solo works very well. The outdoor escape game format in self-guided mode leaves room for introspection: read the story at your pace, hunt clues like a detective. 2-6 players is more social, solo is more contemplative.
Q04Is The Sons of the Castro stroller-accessible?
Depends on the exact route in Vigo · Monte do Castro & Casco Vello. The vast majority of stops are downtown, on sidewalks or squares. If a stair or narrow passage is involved, it's flagged on the product page. Generally: yes, doable with a standard urban stroller.
Avis des aventuriers
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Your turn to play
Vigo's Celtic castros rank among the best-preserved on the peninsula — and the riddles carved into their threshold stones have been waiting two thousand years. Arrive without an appointment, leave with their secrets.
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
🪙+15 TripCoins granted with your booking
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