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Discover Leiden with a 90-minute self-guided walking tour, solving puzzles along iconic sites. A fun, flexible way to explore the Dutch city independently.
Exploring Leiden in 90 Minutes: A Self-Guided Puzzle Tour Review
Leiden, with its charming canals, historic buildings, and lively streets, is a city that invites discovery. A recent offering that aims to combine sightseeing with a bit of brain-teasing is the 90-minute self-guided walking tour called “The Stolen Keys” by Discovery Trips. This experience promises a relaxed yet engaging way to see some of Leiden’s most famous sights while solving puzzles designed to make you think about your surroundings.
What we really like about this tour is how it blends learning with fun. Instead of just passively walking from one landmark to another, you get the chance to test your puzzle-solving skills in a relaxed, flexible format. Plus, it’s completely self-guided, meaning you can start whenever suits your schedule, making it perfect for independent travelers or families seeking a flexible activity.
One potential downside is the puzzle quality and app stability. Some reviews have pointed out that certain puzzles could be clearer or more accurate, and a few users experienced technical issues like app crashes. This is something to keep in mind if you’re expecting a perfectly polished experience; however, it doesn’t seem to spoil the overall enjoyment for most.
This tour works well for adventurous families, history buffs, or anyone who enjoys a mixture of sightseeing and mental challenge. If you’re after a more passive or heavily guided experience, this might not be the best fit. But for those eager to explore at their own pace and add a few brain teasers into their day, it’s a solid choice.


Looking for more options in Leiden? Here are some other experiences worth considering.
The tour kicks off at Molenmuseum de Valk, a beautifully preserved 1743 corn mill located right in Leiden’s city centre. If you’re interested in Dutch milling history, you might find the external view intriguing, though note that the admission ticket isn’t included. We love starting at such a historic site because it immediately sets a tone of authenticity and tradition for the rest of the walk.
Next, you’ll head to the Doelenpoort, an original city gate that once guarded the militia training fields. Free to enter, it offers a glimpse into medieval city defenses. It’s a quick stop, but its historical significance as an access point to the city adds a layer of authenticity to your route.
The Pieterskerk, one of Leiden’s oldest and largest churches, stands as a monument to the city’s long history. As you explore its vicinity, you’ll get insights into the religious and architectural history of Leiden. It’s a peaceful spot that offers some great photo opportunities.
The Rapenburg is arguably Leiden’s most iconic street, lined with historic buildings and canals. Walking along this canal gives you a real sense of the city’s maritime past. According to reviewers, this part of the tour offers some of the best views, making it a highlight.
The tour takes you past two more beautiful churches, the Hooglandse Kerk and Hartebrugkerk, each offering their own architectural charms. The surrounding areas are lively, with shops and cafes, making them ideal for a quick break or photo session.
Passing through De Burcht, an old fortress turned city park, you’ll get a chance to stretch your legs amid lush greenery and historic stonework. Reviewers appreciated this stop, noting that it’s a pleasant area for a quick walk and a peek into Leiden’s defensive past.
Your walk concludes at the Koornbrug, a historic bridge in the city centre. From here, it’s about a 10-minute walk back to your starting point. The end location is central and well-connected to public transport, adding convenience for onward travel.

Included in your booking is access to the Discovery Trip app and the puzzles for “The Stolen Keys”. However, travelers should be aware that you’ll need your smartphone and internet connection to participate, since the tour is entirely app-based.
While the price of around $22.59 per group might seem modest, it’s worth noting that admission tickets to individual sites are not included. If you’re planning to visit some of the sites like the Molenmuseum, you should budget extra.
Most users find the self-guided format to be a major plus, offering flexibility and independence. You can start the tour at your convenience and pace yourself without worrying about schedules or guides. Plus, the ability to choose in what language you want to do the puzzles makes it accessible for international visitors.
However, some reviews mention puzzles that could use more clarification—questions about weights or pigeons, for instance, have caused confusion. One reviewer, Jeroen, noted that “some answers/puzzles were either wrong or needed more info,” which suggests that a bit of copy editing could improve the overall experience.
A more serious issue was reported by Leonidas, who found that the app crashed midway and lost progress. While this was an isolated complaint, it underscores that technical glitches can happen, especially with app-based tours. It’s wise to keep your device charged and be prepared for potential hiccups.
When considering the value for money, think about what you’re getting: an easy, flexible way to see many of Leiden’s key sights while engaging your brain. For $22.59, it’s an affordable option, especially if you’re traveling with family or friends. The puzzles add a playful layer that can make a sightseeing day more memorable, especially for kids or puzzle enthusiasts.
The fact that the tour is self-guided and doesn’t require a fixed start time makes it ideal for spontaneous explorations or fitting into a busy schedule. Plus, since the route stays within walkable distances, you won’t need additional transport costs, and the stops are all within the city center, so you get a compact experience packed with sightseeing.
This experience will appeal most to independent travelers who enjoy discovering cities at their own pace. It’s perfect for families with children who like puzzles or interactive activities, as well as history buffs wanting to see Leiden’s landmarks with a fun twist. If you’re comfortable using apps and smartphones during your trip, you’ll likely enjoy the flexibility and interactivity.
On the flip side, if you prefer guided tours, detailed historical narratives, or have concerns about app stability, this might not be your first choice. As some puzzles could be clearer, those seeking a more polished or educational experience might want to consider other options.

The “Stolen Keys” self-guided tour in Leiden offers a lively, engaging way to explore the city’s most iconic sites while solving fun puzzles. Its self-paced nature and affordability make it attractive for travelers looking for independence and a bit of brain-teasing entertainment. The route covers historical gems like the Pieterskerk and De Burcht, alongside lively streets such as Rapenburg, all within a manageable 90-minute walk.
While some puzzles could be refined and technical issues may occur, these don’t overshadow the overall appeal. For those who enjoy a mix of sightseeing and interactive challenges, it’s a smart choice that adds a playful dimension to your Leiden adventure.
If you’re after a relaxed, flexible activity that combines local sights with a little mental exercise, this tour delivers a memorable experience worth considering. Just keep your phone charged, be patient with app quirks, and you’ll have a delightful way to uncover Leiden’s treasures.
Is this tour suitable for children?
Yes, children who enjoy puzzles and outdoor exploration will likely find it fun and engaging, especially since the tour is flexible.
Do I need to book in advance?
It’s recommended to book around 6 days ahead, but since it’s self-guided, you can start whenever you like once booked.
Are admission tickets to sites included?
No, tickets for places like Molenmuseum de Valk are not included, so budget accordingly if you want to go inside.
What languages is the tour available in?
You can do the tour in English, German, or Dutch, accommodating a range of travelers.
How long does the tour take?
The typical duration is about 1 hour 15 minutes to 1 hour 45 minutes, depending on your pace and puzzle-solving speed.
What should I bring?
A smartphone with internet access is essential, and it’s wise to have a portable charger to keep your device powered.
What if the app crashes or I encounter technical issues?
Some users have experienced app crashes, so keep your device charged and be prepared for potential glitches. Contact the provider if issues persist.
This self-guided walking tour in Leiden offers a playful, independent way to see the city’s highlights, blending history, scenic views, and puzzles in one affordable package. Perfect for curious explorers eager to add a little challenge to their sightseeing.