Private Tour

90 minutes Self-Guided Walking tour with puzzles in Leiden

Overview

Available languages

German

English

Dutch

Mobile ticket

During the Discovery Trip "The Stolen Keys", you will explore the city of Leiden during a 90-minute self-guided walking tour. In 90 minutes, you will see the most iconic places of Leiden while solving fun puzzles about the environment. Do your best and set a new high score for the trip together with your friends or family.

As Discovery Trips is self-guided, there are no fixed starting times. You can pick whenever you want to start discovering. Furthermore, the trip is available in English, German and Dutch.

So, what are you waiting for? Let's discover!

Additional Info

Wheelchair accessible

Infants and small children can ride in a pram or stroller

Service animals allowed

Public transportation options are available nearby

Transportation options are wheelchair accessible

All areas and surfaces are wheelchair accessible

Not recommended for travelers with poor cardiovascular health

Suitable for all physical fitness levels

Cancellation Policy

For a full refund, cancel at least 24 hours before the scheduled departure time.

What‘s Included

Access to the Discovery Trip - "The Stolen Keys" in Leiden

Use of the Discovery Trip app. (Make sure you download it!)

Smartphone, internet connection & data

What To Expect

Molenmuseum de Valk

The trip will start at an orignal corn mill from 1743 that still stands within the city centre of Leiden.

10 minutes • Admission Not Included

Doelenpoort

Original gate that allowed access to the militia training fields that protected Leiden.

10 minutes • Admission Not Applicable

Options

90 minutes Self-Guided Walking tour with puzzles in Leiden

Reviews

3.87

15 reviews

Total reviews and rating from Viator & Tripadvisor

Discover the city in a fun way
138suzetteh,
Sep 5, 2025
- Review from Tripadvisor
5.00
It was a nice experience to discover the city of Leiden in this way. Nice route and good puzzles. We had some problems starting up, but we were able to easily connect with the company and it was resolved immediately. We are going to walk the route in Alkmaar in the coming months and we hope that one day they will make a route in Antwerp. That's how you get somewhere:-)
Surprisingly fun puzzle tour
kristyv270,
Aug 4, 2025
- Review from Tripadvisor
4.00
Very nice trip through Leiden with a surprisingly fun puzzle tour. Together with my wife right through Leiden with beautiful sights. Nice questions, nice puzzle
Cozy getaway for the whole family!
Herma W,
Mar 30, 2025
- Review from Tripadvisor
5.00
We had a very nice day! With the whole family in two groups discovered the city of Leiden with the fun puzzle tour 'of stolen keys' in the beginning just figure out how it worked with the codes and because of the quick response of the Discovery team via whatsapp we could start without any problems!
Nice walk fun puzzles. You're out of your mind.
abelaara,
Mar 1, 2025
- Review from Tripadvisor
5.00
It was a beautiful day. And we decided to do a puzzle tour, look for it and I came up with this one. What a pleasant surprise. With my family (two kids 10&8yrs) we made a beautiful walk through Leiden. Got to places you don't just go. And solve a puzzle in some of those beautiful places. It says 90 minutes. But we stopped at a Frisian bakery, bought Leiden biscuit and grabbed a terrace. It was a wonderful afternoon filling program. Next time in another city I will definitely do it again.
Recommend, had lots of fun and saw a new city
Michelle P,
Nov 16, 2024
- Review from Tripadvisor
4.00
This was a really great way to walk around and discover a new city. The puzzles were fun. They got a bit harder as we went but never too hard. I wasn't sure what to expect, but both of us were impressed and had a lot of fun. I would suggest this as an activity to see a new city. A few things to note, I would say it takes over 2 hours. It took us 3 hours, we walked leisurely and stopped in the market to look a bit. The last few puzzles were all close to each other, and even back tracking a bit. It would be better if the path was always moving forward to new places. But, I would 100% recommend!!
Perplexed in Leiden
Eva K,
Nov 2, 2024
- Review from Tripadvisor
3.00
I had trouble finding the app at first, but I still managed it. The signposting was surprisingly inaccurate for me. It took me a lot of time to get used to it, which is why I dropped out early. Next time, I'll know better and I'll schedule more time. I'm looking forward to it.
Bad app
620deannav,
Sep 30, 2024
- Review from Tripadvisor
1.00
We found the app bad because there was no guidance on how to walk. That was very unfortunate We also cut the trip short and did our own walk
Translation deficient.
Jet62187927760,
Sep 19, 2024
- Review from Tripadvisor
3.00
The tour through Leiden was nice. However, we suspect some translation errors in the puzzles into German, which made it very difficult to solve them (even as experienced puzzlers). The clues were no Help center.
Fun for family with children
joostk795,
Sep 16, 2024
- Review from Tripadvisor
4.00
Nice for family with children 8-12 years. You will see a lot of the center of Leiden during the walking tour. To describe it as an escape room is going too far, it's not.
Nice route, puzzles need work
Jeroen K,
Aug 8, 2024
- Review from Viator
3.00
The route was nice and indeed took 1 to 2 hours. Some answers/puzzles were either wrong or needed more info (like with the weights or pigeons).