🚂 Steam Train Adventure in Wallonia | Mariembourg → Treignes Festival

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

## 🌍 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
📸 Photography lovers
🌿 People who enjoy countryside escapes
🤝 Anyone looking to meet new people without the pressure of a traditional networking event

Coming alone? Perfectly normal.

Many Sunday Vacations participants join individually. The shared experience gives us something to discover and talk about from the moment we arrive.

## 🎒 What to bring

Comfortable shoes and weather-appropriate clothing are recommended.

Bring water, a charged phone, your festival ticket if purchased individually, and some money/payment card for food and personal expenses.

And bring a little curiosity — this is one of those days where the journey itself is part of the experience. 🚂

## ⚠️ Important notes

The Festival Vapeur is organised by CFV3V ASBL, not by Sunday Vacations / UJAMAA ASBL.

Festival activities, train operations, schedules, ticket conditions and accessibility arrangements are determined by the third-party organiser and may change.

The CFV3V notes that its tourist site is accessible to people with reduced mobility, but not every train is necessarily accessible, so participants requiring specific assistance should check directly with the railway before booking.

Sunday Vacations facilitates the community experience and group coordination.

## ⚖️ Legal disclaimer

Sunday Vacations is a community initiative operated by UJAMAA ASBL. We facilitate opportunities for members to meet and participate in shared social and cultural experiences.

The railway journey, festival programme and related visitor services are provided independently by the relevant third-party organisers/providers. Their own terms, schedules, safety requirements, cancellation conditions and insurance arrangements apply.

Unless explicitly stated otherwise, participants purchase and contract third-party services directly with the relevant provider.

Activities are organised by volunteers and covered under the COCOF volunteer insurance framework.

The COCOF framework provides volunteer insurance covering areas including civil liability, bodily injury and legal assistance, subject to its eligibility requirements and policy conditions.

VAT not applicable – small business exemption scheme, Article 56bis Belgian VAT Code.

## 🚂 Ready to escape Brussels for the day?

Sometimes you don't need a flight or a long weekend to feel somewhere completely different.

A steam locomotive, the Walloon countryside and a group of people you haven't met yet can be enough.

👉 RSVP and join us for the ride.

Come for the experience. Stay for the connections. 🌿🌍