Alba Carolina Citadel — Unification Conspiracy
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Alba Carolina Citadel, Alba IuliaAlba Carolina Citadel — Unification Conspiracy
📍 Alba Carolina Citadel, Alba Iulia·🕐 2h30 – 3h·📍 ~3 km
Also available as:HistoricalMysterySpy thrillerCinema

Alba Carolina Citadel — Unification Conspiracy

Uncover the hidden conspiracy that nearly derailed the 1918 Great Union in Alba Iulia. Decipher coded messages left by delegates to expose traitors and secure the lost unification pact before it's too late.

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

Difficulty
·From age 12 years
Starting point :Poarta III a Cetății Alba Carolina (Third Gate of the Citadel)

In the shadow of Alba Carolina Citadel, December 1, 1918 marked the triumphant Great Union: 1228 delegates from Transylvania gathered in the Union Hall to proclaim unification with Romania, birthing a

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

Alba Carolina Citadel — Unification Conspiracy

🎭Your Mission

You are King Ferdinand I's secret emissary, arriving in Alba Iulia, Romania's spiritual capital, in November 1918.

You carry a coded message that will seal Trans

Walk on the cobblestones where modern Romania's unification was proclaimed on December 1st, 1918, in the country's largest bastioned citadel.

The story that haunts this land

Your mission begins at Poarta a III-a, the third gate of the bastioned citadel built between 1715 and 1738 under Charles VI. This monumental gate, topped by the emperor's equestrian statue, guards the entrance to the star-shaped fortress designed by Giovanni Morando Visconti. Above stands Horea's symbolic cell, leader of the 1784-1785 peasant revolt against Habsburg nobility. The 6 gates aligned on east-west axes testify to Vauban's military genius adapted to the Carpathians. Here, you decipher the first clue: an inscription carved on the imperial coat of arms reveals the route to Sala Unirii.

Sala Unirii plunges you into December 1st, 1918, when 1,228 delegates proclaimed Transylvania's union with Romania. This former military casino for Austro-Hungarian officers became the theater of modern Romania's birth. On the west walls, marble plaques preserve the complete text of the Union Resolution and the Law for Regional Union. Your phone reveals the delegates' faces, their voices echoing in the empty hall. Here, Ferdinand I would seal his royal destiny: crowned in 1922 in this same citadel, the first and last coronation on Romanian soil.

The Palatul Principilor takes you back to Romanian unification's origins. This Princes' Palace, built in the 16th-17th centuries on the Roman site of Apulum, was the capital of the principalities united under Mihai Viteazul between 1599 and 1601. This visionary prince achieved the first unification of the three Romanian principalities, three centuries before 1918. In the restored halls, your app reconstructs the 1600 princely court, when Alba Iulia dominated territory stretching from Moldavia to Wallachia. Roman foundations surface beneath your feet, reminding that this land was already an empire crossroads.

The Catedrala Romano-Catolică Sfântul Mihail houses the tomb of Giovanni Morando Visconti, the Italian architect who died of plague in 1718 before completing his citadel. This 13th-century Gothic cathedral, integrated into the bastioned walls, symbolizes Alba Iulia's religious continuity through the centuries. Facing it, the Catedrala Încoronării, built between 1921 and 1922, replaces the Orthodox metropolis destroyed in 1714 by the Habsburgs. These two cathedrals embody united Romania's confessional reconciliation, Catholics and Orthodox now sharing the same citadel. The Obeliscul lui Horea, Cloșca și Crișan completes this pantheon of Romanian resistance.

At Bastionul Sașilor, the last vestige of the medieval fortress incorporated into the modern citadel, you measure your quest's scope. This Saxon bastion, part of the three fortifications route, reveals Alba Iulia's strata: Roman with Apulum, medieval with the Saxon city, modern with Vauban's citadel. Your mission ends here, in this architectural synthesis of Romanian history. You leave with the enigma's key: Alba Iulia isn't just the site of 1918's union, but the millennial crucible where Romanian identity was forged, from Trajan's legions to Ferdinand's delegates.

1784
Revolt of Horea, Cloșca, and Crișan, precursors of Romanian national consciousness in Transylvania.
1er décembre 1918
Proclamation of the Union in Alba Iulia, birth of Greater Romania.
15 octobre 1922
Coronation of King Ferdinand I and Queen Marie in Alba Iulia.
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

National Union Museumoptional
€15. Original weapons and 1918 documents collections, delegates' hall reconstruction with French audioguides.
Optionnel
/pers.
Apulum Princes Museumoptional
€12. Roman vestiges in situ and 3D reconstruction of Mihai Viteazul's capital, period costume guided tours on Sundays.
Optionnel
/pers.
Traditional țuică tastingoptional
€25. Local plum brandy in the vaulted cellars of the Weavers' Bastion, with grilled mici and Carpathian cheeses.
Optionnel
/pers.
Nighttime ramparts showoptional
€30. Mapping projection on Vauban's bastions every Friday at 9pm, 1785 battle reconstruction with pyrotechnics.
Optionnel
/pers.
Budget if you do them all / pers.~0

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
Poarta III a Cetății Alba Carolina (Third Gate of the Citadel)
Directions on Google Maps
🕐
Duration
2h30 – 3h
At your own pace
👥
Players
Unlimited
From age 12
📍
Distance
~3 km
Within the citadel
Accessibility
Partial
Cobblestones and some inclines
🌐
Languages
17 languages
Built-in translation

Why this route?

👑

Royal Coronation

Relive the splendor and symbolism of the birth of a united kingdom, over a century ago.

📜

Secret Proclamation

Decipher the founding principles of Greater Romania, hidden within the stones of the citadel.

🏰

Eternal Fortress

Explore the Alba Carolina Citadel, a historic site where history has been written since antiquity.

Union makes strength, perseverance forges destiny.

Join the architects of Romanian unity.

★ 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

Walk on the cobblestones where modern Romania's unification was proclaimed on December 1st, 1918, in the country's largest bastioned citadel.

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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