It’s time to bring out your inner Sherlock Holmes.
Your mission: to solve the Ducey Code investigation at the Château des Montgommery.
What Awaits You at the Ducey Code
It’s time to channel your inner Sherlock Holmes. Your mission: solve the mysteries of the Ducey Code at the Château des Montgommery.
The Ducey Code offers three different investigations, ranging from the simplest to the most challenging, ensuring there’s something for everyone. Participating in the investigation allows visitors to have fun while discovering the history of the castle and its owners.
Ducey Code – Three Levels of Difficulty
The Ducey Code is a life-sized police investigation game (not an escape game!). The difference? There’s no time limit; you solve the investigation at your own pace. Instead of being locked in a room, you freely wander through the castle, guided by the riddles.
Game 1 – The Careless Traveller (for children):
For children, accompanied by an adult
Professor Halley, the inventor of the château’s time machine, has become trapped in the past.
Let’s help him return to the present!
Game 2 – The Montgommery Saga
An adventure to enjoy with family, friends, or colleagues…
Let’s investigate and discover the Montgommery lineage, shaped by remarkable destinies.
Timeline: from the creation of Normandy to the Wars of Religion.
Game 3 – A Deadly Evening
Expert level – Ages 15+. An immersive smartphone-based game inspired by historical elements.
12 February 1864 at Ducey Castle.
A lifeless body has been found at the foot of the grand staircase.
Your mission is to assist the renowned detective Auguste Dupin in his investigation and uncover the hidden motives behind this tragedy.
Your objective is to determine who killed this person using your smartphone.
(This is the most challenging level of the Ducey Code. It is recommended for players aged 15 and over who are familiar with smartphone-based games.)
This game is only available in French.
You’ll also have the chance to discover the castle
Alongside the crime scene, you’ll discover local history, mixed with that of France. We’ll learn of the accidental death of King Henry II, at the hands of Gabriel de Montgommery, who died of his injuries on 10 July 1559 after a tournament held on 30 June 1559.
This murder mystery also allows detectives to discover the wonders of the castle. Like the Italian coffered ceiling painting, for example.
Solving the Ducey code takes a little time. On average, it takes about an hour. It’s much better if you work together. The guides at the tourist office, can help you if you get stuck! You can register online now!
2/ Self-guided tours
If you’re not into games, no worries! You can enjoy a self-guided visit during the same opening hours as the Ducey Code. Simply let yourself be guided through the different floors by the history of the Montgommery family.
How to best plan your visit to the Château des Montgommery?
The summer season is just around the corner, and the steady number of visitors can sometimes make planning your visit a bit tricky. Whether you want to take part in the investigation or simply enjoy a visit, we strongly recommend booking your tickets in advance.
For safety reasons, the château cannot accommodate more than 24 people per time slot (slots are every 30 minutes).
If you’re coming as a group for the game (more than 10 people), be sure to plan ahead and split into smaller teams upon arrival. It’s much easier to progress in small groups of around 5 people, so everyone can fully engage with the puzzles and discuss them together. We also recommend checking the different investigation levels in advance, so you can choose the one that suits you best before arriving at the château.
Opening hours 2026
- 4 April to 3 May: Wednesday to Sunday and public holidays, from 2:00 pm to 6:00 pm
- 8 May to 28 June: Saturdays, Sundays and public holidays only, from 2:00 pm to 6:00 pm (including Ascension weekend)
- 1 July to 31 August: Open every day and public holidays, from 10:00 am to 6:00 pm
- 5 September to 18 October: Saturdays and Sundays only, from 2:00 pm to 6:00 pm
- 21 to 31 October: Wednesday to Sunday, from 2:00 pm to 6:00 pm
Last admission:
- 4:30 pm for the game
- 5:00 pm for self-guided tours
Estimated game duration: 1 to 1.5 hours
Children must be accompanied by an adult.
Château des Montgommery
Tel : +33 2 33 60 21 53
50220 Ducey-les-Chéris
www.ducey-code.com
