🔒 Instant Access: Book now and start immediately. No need to wait for a guide.
⏱️ Total Flexibility: Start, pause, and resume whenever you want.
🧩 Gamified Discovery: Solve 12 location-based puzzles to unlock hidden stories and secret spots.
📍 Starting Point: Tuida fortress, Lozyata, улица "Проф. д-р Боян Боянов №3, 8800 Sliven, Bulgaria
🛡️ Free Cancellation: Cancel up to 24 hours before your planned start for a full refund.
🌐 Available In: 🇬🇧 English
Single Mission
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Annual Pass
Play any quest in 1000+ cities for the price of a dinner for two.
Places you will visit
12
It will take you
70-100 mins
Route you will explore
Starting point Tuida fortress
Lozyata, улица "Проф. д-р Боян Боянов №3, 8800 Sliven, BulgariaFinish point Tuida fortress
Lozyata, улица "Проф. д-р Боян Боянов №3, 8800 Sliven, BulgariaAbout this quest
Highlights
Experience Tuida, where the stones themselves reveal hidden truths.
Embark on a journey of adventurous quests revealing a deeper layer of Tuida's secrets and its true purpose.
Gain access to secrets that are written nowhere.
Explore a highly awarded Bulgarian sight, recognized as a premier destination.
The mission: Your story in Sliven
Embark on a perilous journey: each task, each quest, unveils a layer of Tuida's enigmatic history, revealing the true purpose of its towering walls and labyrinthine passages.
The deeper you delve, the more you attract the attention of unseen forces, guardians of the fortress's darkest secrets.
Good to know before you play
- Ensure your phone is fully charged or bring along your trusty power bank
- Varied terrain/elevation, may not be suitable for those with limited mobility
- Family friendly
- Fun to do as a couple
- You need to buy the entrance ticket separately
- If the weather gets cold, you can pause and go inside to warm up at almost any location in the game
Tips & Recommendations
Wear Comfortable Shoes
You will be walking throughout the city, so comfortable footwear is essential for enjoying the experience.
Charge Your Phone
Make sure your smartphone is at least 60% charged. The quest runs through the Questo app, and you will be using it throughout.
Check the Weather
This is an outdoor activity. Bring an umbrella or sunscreen depending on the forecast.
Bring a Camera
You will discover photogenic locations and hidden gems perfect for capturing memories.
Stay Hydrated
Bring water, especially during warmer months or longer quests.
Play with Friends
While you can play solo, quests are more fun with friends or family. One ticket works for a group.
Ratings and Reviews
19 ratings
Theo Nedyalkova
КАТЕРИНА ВАСИЛЕВА
николай трънчев
Zoia Dimitrova
Margarita Vasileva
Beat the best: Top Sliven explorers
Compare Questo vs. Guided Walking Tours
Flexibility
Regular Guided Tours
Fixed schedules & no pausing
Questo
Start, pause, and resume anytime
Privacy
Regular Guided Tours
Crowds of up to 30 strangers
Questo
Private experience for your group only
Pricing
Regular Guided Tours
$30-$40 per person
Questo
Affordable per-group pricing
Availability
Regular Guided Tours
Requires advance booking
Questo
Instant access 24/7/365
Experience
Regular Guided Tours
Passive listening to a guide
Questo
Active gamification; you solve the mystery
| Feature | Regular Guided Tours | Questo |
|---|---|---|
| Flexibility | Fixed schedules & no pausing | Start, pause, and resume anytime |
| Privacy | Crowds of up to 30 strangers | Private experience for your group only |
| Pricing | $30-$40 per person | Affordable per-group pricing |
| Availability | Requires advance booking | Instant access 24/7/365 |
| Experience | Passive listening to a guide | Active gamification; you solve the mystery |
