🚂 Steam Train Adventure in Wallonia | Mariembourg → Treignes Festival
About the event
Join Sunday Vacations for a different kind of day out in Wallonia: historic steam locomotives, countryside views, railway heritage, a lively festival atmosphere and a group of international people to experience it with.
We’re heading to Mariembourg for the Festival Vapeur 2026, organised by the Chemin de Fer à Vapeur des 3 Vallées (CFV3V).
🌿 Experience overview
For one weekend, the historic railway between Mariembourg and Treignes comes alive for one of Belgium’s special railway events.
Four historic locomotives - SACM, BR-64, AD09 and ELNA - are announced for the festival, alongside musical entertainment, railway modelling, food options, an artisan market in Treignes and other activities.
But you definitely don't need to be a train enthusiast.
For us, this is about slowing down, discovering a lesser-known corner of Belgium and sharing an unusual experience with new people.
Come solo, bring a friend, meet the group — and enjoy the ride. 🌿
🌍 Event type
🌿 Curated Experience A Sunday Vacations community day trip built around heritage, discovery and social connection.
✨ Highlights
🚂 Ride historic trains through the Three Valleys 🌲 Enjoy the countryside between Mariembourg and Treignes 🏛️ Discover Belgium's railway heritage 🎶 Festival atmosphere and musical entertainment 🛍️ Explore the artisan market in Treignes 🚃 See several historic locomotives operating during the festival 🍴 Food and refreshments available on site 🌍 Meet internationals, expats and locals from the Sunday Vacations community 🙋 Solo joiners are very welcome
The railway follows a scenic route through the Three Valleys area, passing countryside and villages including Treignes, Vierves and Olloy.
🗓️ Plan / itinerary
Sunday, 27 September 2026 We’ll meet as a group and travel towards Mariembourg.
Once there, we'll enter the festival and spend the day exploring the railway, riding the historic trains, discovering Treignes and enjoying the festival atmosphere together.
Indicative flow: Morning - Group meeting & departure Late morning - Arrival in Mariembourg 🚂 Festival & historic train experience 🌿 Journey towards Treignes 🍴 Lunch / free time 🛍️ Artisan market & festival activities 🚂 Continue exploring the railway and festival Late afternoon - Regroup Evening - Return
The festival's detailed train timetable is published by the railway separately, so our exact schedule may be adjusted around the official departures.
📍 Meeting point
Brussels Exact meeting point and departure time will be shared with confirmed participants.
Festival location: Chemin de Fer à Vapeur des 3 Vallées Chaussée de Givet 49 5660 Mariembourg, Belgium
💶 Price / contribution
Festival ticket: €30 per adult for a one-day unlimited travel ticket.
Children aged 6-11: €20 Children under 6: free.
Sunday Vacations community contribution:
€5 for Explorer members Free for Voyager and Ambassador members Become a member on www.sundayvacations.com
Food, drinks and personal purchases are not included unless explicitly stated.
🎟️ Festival reservations are recommended and ticket sales are handled by the festival organiser. [Official Festival Vapeur information & tickets](https://cfv3v.eu/evenements/festival-vapeur-2026/?utm_source=chatgpt.com)
🌍 Sunday Vacations Membership
Sunday Vacations is a community for people who want to discover more, get out of their routine and meet others through shared experiences.
Explorer - €5/year An easy way to join the community.
Voyager - €50/year For people who want to participate more regularly in Sunday Vacations experiences.
Ambassador - €150/year For our most engaged community members who want to support and participate more deeply in the community.
Membership details and applicable event benefits are communicated on www.sundayvacations.com
🙋 Who this is for
This day is especially suited to:
🌍 International professionals & expats 🇧🇪 Locals interested in meeting international people 🙋 People coming alone 🚂 Railway and heritage enthusiasts 📸…
