Enable Location

We need your location to show you interesting places around you

Discover nearby places

Find interesting locations and hidden gems around you

Precise directions

Get accurate directions and distances to places

Your location is never shared with other users. It's only used when you tap the location button.

Fort du Trou-d'Enfer

Log in to your account

Start exploring — it's free

Trusted by 61,578 travelers worldwide

Continue with Google
Continue with Apple
or

We will send you a code to connect

By continuing, you accept our Terms and Conditions and our Privacy Policy

Check your inbox

We've sent a pincode in your inbox. Please enter the code below.

Fort du Trou-d'Enfer

Fort du Trou-d'Enfer, Military fortress in Marly-le-Roi, France.

Description

Fort du Trou-d'Enfer is a fortified complex located in Marly-le-Roi that sits on wooded terrain and features thick stone walls with multiple defensive structures. The facility includes a central courtyard surrounded by various casemates and defensive trenches.

History

The fortress was constructed between 1878 and 1881 as part of Paris's defensive system. It served as an important component of French military infrastructure during that period.

Culture

The grounds were later converted into a pheasant breeding facility for presidential hunting, a use that continued until 2010. Visitors can still see traces of this unexpected purpose scattered across the property.

Practical

Access to the fortress is typically through organized guided tours that must be arranged in advance. Wear comfortable shoes as the grounds are uneven and include several walking paths to explore.

Did you know?

The fortress has two underground powder magazines connected to the main barracks through covered passages. These hidden structures reveal the strategic planning behind the military complex.

Location
Location
Elevation above the sea
178 m
Part of
Fortifications of Paris in the 19th and 20th centuries
Address
route de Maintenon 78160 Marly-le-Roi
GPS coordinates
48.84907,2.08656
Latest update
December 15, 2025 09:21

AroundUs brings together thousands of curated places, local tips, and hidden gems, enriched daily by 60,000 contributors worldwide. Discover all places nearby (Marly-le-Roi).

Filming locations of The Count of Monte Cristo

The 2024 film The Count of Monte Cristo, directed by Matthieu Delaporte and Alexandre de La Patellière, was shot in places full of history. This film journey moves through France, from the Mediterranean coast to the Île-de-France region, passing through Belgium and Malta. You will see how the...

« Fort du Trou-d'Enfer - Military fortress in Marly-le-Roi, France » is provided by Around Us (aroundus.com). Images and texts are derived from Wikimedia project under a Creative Commons license. You are allowed to copy, distribute, and modify copies of this page, under the conditions set by the license, as long as this note is clearly visible.

Discover hidden gems everywhere you go!

From secret cafés to breathtaking viewpoints, skip the crowded tourist spots and find places that match your style. Our app makes it easy with voice search, smart filtering, route optimization, and insider tips from travelers worldwide. Download now for the complete mobile experience.

Around Us App Screenshot

A unique approach to discovering new places

Le Figaro

All the places worth exploring

France Info

A tailor-made excursion in just a few clicks

20 Minutes

Around Us
Travel Guide & Maps
Download

Send to your phone

QR Code
1

Open the camera app on your mobile.

2

Point at the QR code with your camera. A notification will appear.

3

Tap the notification to open the link.