In Outreau, near Boulogne-sur-Mer, La Grotte is a contemporary holiday cottage entirely designed to give the impression of staying inside a cavern. Open since 2025, it is not a real natural cave: the property has been transformed to recreate an immersive rocky environment with modern comforts.
The entire property accommodates up to 5 guests and has 2 bedrooms, 4 beds and 2.5 bathrooms, according to the current listing.
The main attraction: the indoor pool
The most spectacular room features a heated underground swimming pool, incorporated into the rocky décor. The cottage also has a kitchen, Wi-Fi, a lounge, a television and on-site parking.
It is therefore a good option for couples and families alike, particularly if you want a visual and immersive experience rather than genuine troglodyte accommodation.
Before booking
- maximum capacity: 5 people;
- check-in from 17:00 according to the current Airbnb listing;
- check-out before 11:00;
- open all year round;
- prices vary by date and guest numbers; available 2026 references indicate a range of approximately €360 to €780.
La Grotte is on route du Portel in 62230 Outreau, a few minutes from Boulogne-sur-Mer and the Côte d’Opale.
Remember: the experience comes from the cave-themed setting and its indoor pool, not accommodation carved into a cliff or natural cavern.
