Explore Leiden at your own pace with "The Stolen Keys," a 90‑minute self-guided puzzle walk that threads canals, churches, and a historic corn mill into a timed urban adventure. Download the app, gather your team, and chase a new high score through the city center.
More ways to explore the area's outdoor wonders
You start at an 18th-century corn mill as bells and canal water mark your pace, cobbles clicking underfoot. The city unfolds in short chapters: narrow bridges, a church spire rising over the market, and shop windows that hide small stories. The Discovery Trip "The Stolen Keys" turns those details into clues—each solved raps you forward through Leiden’s center.
Difficulty
easy
Duration
75–105 minutes
Fitness Level
Suitable for all fitness levels; light walking on flat urban terrain
Wildlife
History
Leiden grew around its canals and university; notable events include the 1574 Siege of Leiden and centuries of textile and milling trade visible in the city center.
Conservation
Stay on public paths and avoid disturbing canal edges; small urban actions—proper trash disposal and using public transport—help preserve Leiden’s historic fabric.
Reserve your spot on the 90 minutes Self-Guided Walking tour with puzzles in Leiden today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Download the app before you go
The Discovery Trip app provides the puzzles and timing—download and test it on Wi‑Fi to avoid delays.
Charge your phone and bring a power bank
This trip relies on your device for navigation and puzzle-solving; a full battery is essential for scoring.
Choose off-peak hours
Start mid-morning or late afternoon to avoid market crowds and get clearer views at points of interest.
Wear comfortable footwear
Paved streets and cobbles require supportive shoes; avoid new or thin-soled footwear to keep pace with the timed elements.
Smartphone with the Discovery Trip app
Required for puzzles, navigation, and scoring.
Comfortable walking shoes
Support and traction for cobbles and paved streets.
Light waterproof layer or umbrella
Leiden’s weather is changeable—bring quick protection for showers.
spring
Portable power bank
Keeps your phone charged for the duration and photo opportunities.