Clos Vauban
Quiet, literary, and rooted in place. Think reclaimed antique furniture sourced from the Haute-Marne countryside, wicker artworks from nearby Fayl-Billot (France's osier-weaving capital), and Napoleon-era tall windows flooding rooms with light. The mood is intimate and unhurried — deliberately small, deliberately local.
Book Bulle d'Osier well in advance — the dining room is small and intentionally intimate; they limit large parties to protect the experience.
Why It Matters
First Relais & Châteaux property in the Haute-Marne region. The flagship restaurant Bulle d'Osier holds 2 Michelin stars and a Michelin Green Star for sustainability. The property is backed by the pedigree of Laurent Petit (who built a 3-star kitchen in Annecy) and is deeply embedded in its terroir, sourcing from a private 3,000 m² garden, local fisheries, hunters, and foragers.
Clos Vauban is an intimate 8-room Relais & Châteaux property set inside a 19th-century Haussmann mansion perched on the ancient ramparts of Langres — the birthplace of Diderot and home to the largest remaining fortified city in Europe. It is the project of Laurent and Martine Petit, the couple behind the three-Michelin-star Clos des Sens in Annecy, who handed daily operations to young chef Valentin Loison and sommelier Anaïs Bercegeay. The food is the main event: Bulle d'Osier holds 2 Michelin stars and a Green Star, and Mirabelle holds a Bib Gourmand. The building sits in the middle of a 3,000 m² kitchen garden that feeds both kitchens directly.
Where You'll Stay
8 room types available
Fragilis
Panoramic views sweep across the valley, the kitchen garden below, and the ramparts. The light changes throughout the day and the setting leans romantic. Shower and bath included. One of the more quietly dramatic rooms in the hotel.
King Size · 32.78 sqmJeanne
A mansard room on the top floor, named for Langres-born Jeanne Mance. Intimate and singular, with two bathtubs and Jacobine windows that look out over the valley, Lac de la Liez, and the ramparts. The sloping ceilings and light-filled setting make it feel like a proper hideaway.
King Size · 39 sqmPetite-Grisette
Overlooks the valley, the ramparts, and Lac de la Liez. The bathroom has a glass veranda ceiling that lets in natural east-facing light — a nice detail. Comes with both shower and a freestanding bath.
King Size · 33.39 sqmRegalis
Halfway between the kitchen garden and the Porte des Moulins gate. Its standout feature is a striking rose-pink bathroom — singular and memorable. Shower and bath both included.
King Size · 33.94 sqmSalix
The most accessible room in the house — fully adapted for guests with reduced mobility. Despite that functional brief, the design doesn't feel clinical: valley and rampart views from the window, shower and bath, and enough space to move freely. A good pick for anyone who values both comfort and ease of movement.
King Size · 39.33 sqmSuite Diderot
Named after Langres' most famous son. A 65 m² suite on the top floor under the Eiffel-style iron roof structure, with a door hand-carved by artisan Francis Logerot. The bathroom has two bathtubs placed tête-bêche at the foot of the bed — an arrangement that is either romantic or perfectly suited to a family. Dual views: valley and ramparts on one side, the city rooftops on the other. Sleeps 2–4.
King Size + sofa bed (2 to 4 guests) · 65 sqmSuite Familiale Eiffel
The largest room in the house at 69 m², centred on the building's remarkable original Eiffel-style iron roof structure. There are two sleeping areas — a primary bedroom with a king and a secondary space that works as either a lounge or a second bedroom with a queen — plus panoramic valley views through Jacobine windows. Sleeps 2–4 comfortably.
King Size + Queen Size (2 to 4 guests) · 69 sqmTortuosa
The smallest and cosiest room in the house. Big windows face the city centre and frame the Porte des Moulins gate. Warm carpet and vivid colours give it a cocoon feel — it is the most compact option but well suited for someone who spends their time in the restaurants rather than the room.
King Size · 26.31 sqmThe Property
Eat & Drink
2 venues on property
Restaurant
Spa & Wellness
Treatment Menu
On Property
How you'll actually spend your days.
Langres' 12th-century Gothic cathedral, a few minutes' walk from the hotel. Notable stained glass and Romanesque cloister.
The museum dedicated to philosopher and Encyclopédie editor Denis Diderot, who was born in Langres. Located in the city just a short walk from the hotel. Manuscripts, personal objects, and Enlightenment-era exhibits.
A remarkable garden on the edge of the Parc National de Forêts, known for its stone snail sculptures and maintained by volunteers. A leisurely afternoon destination.
The 3,000 m² potager and aromatic herb garden is open for guests to wander during the growing season. It feeds both restaurants directly and changes week by week through the year.
A large peaceful reservoir lake about 3 km from the hotel, surrounded by wooded hills. Walking paths ring the water and it is excellent for birdwatching, cycling, and picnicking.
France's most recent national park (created 2019), straddling Haute-Marne and Côte-d'Or. Forests, meadows, and village architecture. Excellent hiking and cycling trails. About 30–45 minutes from Langres by car.
The 3.5 km circuit of Langres' medieval walls — the longest remaining fortified enclosure in Europe — begins steps from the hotel. Views over the valley are particularly good from the south ramparts.
Amenities & Practical Info
The details that matter for planning.
Elevator serving all floors. Accessible ramp also available at entrance.
Suite Salix is fully adapted for guests with reduced mobility.
Complimentary WiFi throughout the property.
Served 8h–10h. Composed of cheese, fresh fruit, cakes, brioches, smoked trout, pancetta, copa, compotes, fromage blanc muesli, pâté croûte, and apple juice.
An intimate bar available exclusively to hotel and restaurant guests. Not open to walk-in external visitors.
Concierge service available. Reservations team reachable Tuesday–Saturday, 9h–21h30.
Official online gift box store offering stays, Bulle d'Osier menus, and Mirabelle meals as purchasable gifts.
All rooms include air conditioning.
Over 3,000 m² of vegetable and aromatic herb garden on the property. Open for guests to stroll during fine weather; provides produce directly to both restaurants.
Outdoor terrace overlooking the city. Aperitifs and coffees can be served outside in good weather.
Pets welcome with a €30 anti-allergen cleaning supplement per stay. Small calm animals also accepted in restaurants.
The property does not have a swimming pool.
15-space private car park on-site, non-covered, available subject to availability. No charge.
Two electric vehicle charging stations available exclusively to hotel and restaurant guests. Charging cost is at the guest's expense.
Secure bicycle parking available on-site.
Complimentary transfer service to and from Langres SNCF station (2 km away), available on request.
No on-site spa. In-room massages available on request via external provider.
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