Capitol Hill — Decode the Silent Sentinels' Underground Network
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Washington D.C. – Capitol HillCapitol Hill — Decode the Silent Sentinels' Underground Network
📍 Washington D.C. – Capitol Hill·🕐 1h30 – 2h·📍 ~2 km
Also available as:HistoricalMysterySpy thrillerSupernaturalCinema

Capitol Hill — Decode the Silent Sentinels' Underground Network

Decipher the hidden messages left by the Silent Sentinels and expose the suffragettes' secret coordination network that challenged a president and changed democracy.

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

Difficulty
·From age 8 years
Starting point :In front of the Library of Congress (Thomas Jefferson Building)

March 1913: While President Wilson's inaugural parade marches down Pennsylvania Avenue, a parallel network of women operatives executes a daring counter-strategy

8
stages
~2 km
route
1h30 – 2h
at your pace
🚶
walking

Capitol Hill — Decode the Silent Sentinels' Underground Network

🎭Your Mission

You are an intrepid archivist, commissioned on November 2, 1897, the inauguration day of the Library of Congress.

Your mission: decipher the hidden messages of the suffrag

Dive into the heart of Washington DC, following the footsteps of the 'Silent Sentinels', a clandestine network that defied conventions to forge the future of American democracy.

The story that haunts this land

Your quest begins in front of the Library of Congress, the Thomas Jefferson Building, inaugurated in 1897. This edifice, built between 1888 and 1897, houses the Gutenberg Bible, a printing treasure dating back to 1455. It is here, at the heart of this knowledge, that the first clues are unveiled. The Main Reading Room, usually accessible via a scheduled visit, offers you a first enigma, connected to the underground networks linking the building to the Capitol. This walking tour invites you to a deep exploration of American political heritage in Washington DC.

Continue your investigation towards the Supreme Court of the United States, one of the three main sites on Capitol Hill. This place, where historical decisions have shaped the nation, is a central point of your outdoor escape game. Located in the immediate vicinity of the Capitol, the Supreme Court is a key stage of this thematic Washington circuit. You will find hidden symbols, engraved dates, allusions to the struggles for justice that resonate with the city's motto. The 60-90 minute tour, often documented by guided visits, reveals only a fraction of the secrets you are about to discover in Washington.

The Belmont-Paul Women's Equality National Monument is your next stop. Dedicated to women's equality, this national monument on Capitol Hill is a living testament to the history of women's rights in the United States. It is accessible on foot from the Library of Congress, within a 1.5 km radius. Here, figures of suffragettes like Susan B. Anthony come to life in augmented reality, guiding you through challenges and victories. This site, an integral part of American political heritage, is a pillar of your exploration of the Silent Sentinels in the capital, Washington.

Your itinerary then leads you to Union Station, a major historic train station in the Capitol Hill district, whose 19th-century architecture is inspired by the Beaux-Arts style. It is a starting point for many tours and an essential thoroughfare for activists of the era. You cross it via Massachusetts Avenue to access Lower Senate Park, a green space between Union Station and the Capitol, perfect for observing Washington's political life. Although Union Station is not directly linked to the Silent Sentinels, it was a crossroads where ideas and activists met, symbolizing the circulation of messages and hopes for equality. This place prepares you for the discovery of major documents at the National Archives Museum.

On your way to the National Archives Museum, repository of major historical documents of the United States, you cross Lafayette Square, a major historic square in Washington's political district, near the National Mall. This museum, located on the National Mall, is a crucial step in your journey, revealing hidden archives. Every site on this thematic circuit of Washington, from the United States Capitol, seat of the American Congress, to the Belmont-Paul Women's Equality National Monument, contributes to the richness of your discovery. This GPS treasure hunt offers you a total immersion in the history of Washington, an interactive visit that will remain etched in your memory, well beyond the ~105 minutes of the game.

1848
Seneca Falls Convention, first women's rights convention in the U.S.
1913
Great Woman Suffrage Procession in Washington D.C.
1920
Ratification of the 19th Amendment, guaranteeing women's right to vote.
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

Tour of the United States Capitoloptional
Free. Explore the historic Rotunda and the chambers of the American Congress with an expert guide, a must-see of Washington DC's political heritage.
Optionnel
/pers.
National Archives Museumoptional
Free. Admire the Declaration of Independence and the U.S. Constitution on the National Mall, near the U.S. Botanic Garden.
Optionnel
/pers.
'Half-Smokes' Tastingoptional
$8-12. Taste Washington DC's iconic smoked sausage, often served with chili, a local classic since the 1950s.
Optionnel
/pers.
U.S. Botanic Garden Touroptional
Free. Relax in this green oasis on the National Mall, a peaceful haven just steps from Washington's political bustle.
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
In front of the Library of Congress (Thomas Jefferson Building)
Directions on Google Maps
🕐
Duration
1h30 – 2h
At your own pace
👥
Players
Unlimited
From age 8
📍
Distance
~2 km
Around Capitol Hill
Accessibility
Full
Mostly flat route
🌐
Languages
17 languages
Built-in translation

Why this route?

♀️

Women's Rights

Explore the history of an essential fight for equality.

Social Movement

Discover the audacious strategies of activists.

📝

Constitutional Reform

Women's voices resonated. Discover how.

A legacy of courage and perseverance.

★ 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

Soyez le premier à partager votre expérience.

Did you play la voie secrete des suffragettes? Check the email you received after your game to leave a verified review.

Your turn to play

Dive into the heart of Washington DC, following the footsteps of the 'Silent Sentinels', a clandestine network that defied conventions to forge the future of American democracy.

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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