Become Hanoi's Street Detective
Decode mysteries across iconic landmarks — Hoan Kiem, the Opera House, Long Bien Bridge.
Buy a route, follow the trail, click hotspots on real photos, solve a riddle at every stop, earn a keepsake badge.
- 8
- Routes
- 51
- Story stops
- 2
- Languages
The Lost Sword Trail
60 min · 6 stops · 2.1 km
4 steps
How it works
Four simple steps to start your adventure.
- 1
Buy a route
Pick a route that fits you — Easy, Medium or Hard.
- 2
Head to the spot
Follow the map to the real-world starting point.
- 3
Click & solve
Tap hotspots on real photos, solve the riddle at every stop.
- 4
Earn a badge
Finish the route and unlock a keepsake badge for your collection.
Routes
Featured routes
Discover Hanoi through a detective's eyes.
FAQ
Frequently asked
Everything you need to know before you start.
Ready to crack the case?
Grab your phone, hit the streets, follow the clues. Hanoi is waiting for you to uncover its hidden corners.
Get StartedPay once · Replay anytime · Refund if broken