Every third weekend of September, castles, churches, mansions and sites usually closed open their doors for free: these are the European Heritage Days. Around Mas Saint Antoine, the area is a real open-air history book. This guide to the Heritage Days around Bourg-Saint-Andeol gives you the 2026 dates, the must-see sites of the area and all our tips. After ten years advising our guests, here is how to make the most of this weekend like no other.
The 2026 Heritage Days: dates and principle
The 43rd European Heritage Days will take place on Saturday 19 and Sunday 20 September 2026, with a day dedicated to schools on Friday 18. The principle is simple and generous: all over France, thousands of places open for free, offer guided tours and reveal spaces sometimes inaccessible the rest of the year. Two themes are in the spotlight in 2026: the heritage of photography, for the bicentenary of its invention, and heritage at risk. Remember to bring your camera!
In Bourg-Saint-Andeol, at the foot of the Mas
The town where the Mas is located is a small town of art and history, and it opens several of its treasures each year for the occasion. Among the places that usually take part:
- The Bishops’ Palace: apartments, courtyard and exhibitions, often on free and guided visits.
- The Romanesque church of Saint-Andeol and its organ concerts.
- The Vallon de Tourne: a listed site, with its antique-inspired washhouse, its Vauclusian springs and the famous Mithra bas-relief.
- The mansions and old town, to discover on guided walks “from the Roman ramparts to the Renaissance”.
To explore the town further, also read our article on the little-known treasures of Bourg-Saint-Andeol.
Within 30 minutes: Viviers and the Rhone valley
Fifteen minutes from the Mas, Viviers is one of the finest medieval towns in the region. For the Heritage Days, you can usually discover its Saint-Vincent cathedral — the smallest working cathedral in France — and its organ, the Maison des Chevaliers with its superb Renaissance facade, and the old town on guided tours starting from the Town Hall. A concentrate of history not to be missed.

Within an hour: castles, towns and Roman sites
Widening the circle a little, the choice becomes magnificent.
| Site | Where | Distance from the Mas |
|---|---|---|
| Grignan castle (Mme de Sevigne) | Drome Provencale | ≈ 30 min |
| Chateau des Adhemar | Montelimar | ≈ 30 min |
| Roman site of Alba-la-Romaine | Ardeche | ≈ 1 h |
| Medieval village of Saint-Montan | Ardeche | ≈ 30 min |
These sites regularly take part in the Heritage Days, with visits, exhibitions and activities. Enough to build a tailor-made weekend to suit your tastes.
How to find the exact 2026 programme?
Here is the key point: the detailed programme — open sites, exact times, any bookings — is published each year only a few weeks before the event, and it changes from one edition to the next. To plan your weekend, consult the official European Heritage Days website and the local tourist offices. For the Bourg-Saint-Andeol and Ardeche Gorges area, the intercommunal tourist office (04 75 54 54 20) publishes the detailed programme for the town and surroundings. That is where you will find the exact times and the visits requiring booking.
Our tips to enjoy the Heritage Days
- Check the official programme in advance: the 2026 sites and times are published shortly before the weekend.
- Book the most popular visits: some limited-capacity places require online booking.
- Arrive early: emblematic sites can get busy in the middle of the day.
- It is free: the vast majority of openings are free — take the chance to try unusual places.
- Bring good shoes and, a nod to the 2026 theme, your camera.
- Group nearby sites: Bourg-Saint-Andeol and Viviers, for example, combine easily in a day.
Experiencing the Heritage Days from Mas Saint Antoine
In mid-September, Ardeche regains its gentleness: golden light, pleasant temperatures, sites less busy than in high summer. It is the ideal time for a heritage weekend, and Mas Saint Antoine is the perfect base. A few minutes from Bourg-Saint-Andeol, fifteen minutes from Viviers, half an hour from Grignan and Montelimar, you explore effortlessly — and come back in the evening to enjoy the pool and the terrace facing Mont Ventoux.
Why stay at Mas Saint Antoine?
- ✅ An ideal base, in the heart of an area of great heritage richness.
- ✅ 6 independent cottages, on 2 hectares of enclosed, wooded grounds.
- ✅ A large 13×6 m saltwater pool and an exceptional view of Mont Ventoux.
- ✅ Air-conditioned cottages, rated 4.9/5 from over 130 reviews, selected by Petit Fute 2026.
- ✅ Ideal as a couple, as a family or as a group of up to 38 people in privatisation.
Discover our 6 cottages or contact us to plan your weekend.
In conclusion
- The 2026 Heritage Days take place on Saturday 19 and Sunday 20 September (18 for schools).
- Around the Mas, Bourg-Saint-Andeol and Viviers open superb sites each year, for free.
- Within an hour: the castles of Grignan and Montelimar, the Roman site of Alba-la-Romaine.
- The exact 2026 programme can be found on the official website and from tourist offices.
- In mid-September, Mas Saint Antoine is the ideal base for a gentle heritage weekend.
Pushing open the door of a palace, hearing the organ resound beneath Romanesque vaults, wandering a thousand-year-old town: the Heritage Days offer rare memories, a stone’s throw from the Mas. See you soon in Ardeche.
Frequently asked questions
When are the 2026 Heritage Days?
The 2026 European Heritage Days take place on Saturday 19 and Sunday 20 September, with a day reserved for schools on Friday 18. It is the 43rd edition. As every year, it is held on the third weekend of September, a chance to discover exceptional heritage for free, including around Mas Saint Antoine.
Are the Heritage Days free?
Yes, the vast majority of openings and visits are free: that is the whole spirit of the event. However, some very popular, limited-capacity sites may require booking, sometimes with a contribution. Check the conditions of each place on the official programme or with the local tourist offices before travelling.
Where can you find the Heritage Days programme around the Mas?
The detailed programme is published each year a few weeks before the event, on the official European Heritage Days website and on the tourist office websites. For the Bourg-Saint-Andeol and Ardeche Gorges area, the intercommunal tourist office (04 75 54 54 20) shares the programme for the town and surroundings, with times and bookings.
What to visit in Bourg-Saint-Andeol for the Heritage Days?
Bourg-Saint-Andeol usually opens several of its treasures: the Bishops’ Palace, the Romanesque church of Saint-Andeol and its organ concerts, the Vallon de Tourne with its antique washhouse and Mithra bas-relief, and the mansions of the old town on guided walks. The exact programme for the year is to be checked with the tourist office.
What to see in Viviers during the Heritage Days?
Fifteen minutes from the Mas, Viviers usually offers the discovery of its Saint-Vincent cathedral — the smallest working one in France — and its organ, the Maison des Chevaliers with its Renaissance facade, and its medieval old town on guided tours. It is one of the finest heritage stops in the area.
Which sites can you visit within an hour of the Mas?
Widening to an hour’s drive, you can reach the Grignan castle, dear to Madame de Sevigne, the Chateau des Adhemar in Montelimar, the Roman site of Alba-la-Romaine or the medieval village of Saint-Montan. These sites regularly take part in the Heritage Days, with visits and activities to check on the year’s programme.
Do you need to book for the Heritage Days?
Many sites can be visited freely, without booking. But the most popular or limited-capacity places may require prior registration, often online. It is best to identify in advance, on the official programme, the visits that interest you and check whether booking is needed, to avoid any disappointment on the day.
What is the theme of the 2026 Heritage Days?
The 2026 edition highlights two themes: the heritage of photography, for the bicentenary of its invention, and heritage at risk. Many sites offer exhibitions and activities around photography. It is also a lovely opportunity to bring your camera to capture the area’s monuments.
Are the Heritage Days suitable for families?
Yes, many sites offer visits and activities accessible to children, and a day is even dedicated to schools on the Friday. It is a fun way to discover history as a family. With young children, prefer outdoor sites or short visits, and check the programme to spot the activities designed for them.
Where to stay for the Heritage Days around Bourg-Saint-Andeol?
Mas Saint Antoine, on the heights of Bourg-Saint-Andeol, is an ideal base: a few minutes from the town, fifteen minutes from Viviers and half an hour from Grignan and Montelimar. You move easily from one site to another, then come back to enjoy the pool and the view of Ventoux. In mid-September, the estate offers calm and gentleness.
Article written by Bernard Favre, owner of Mas Saint Antoine.

















