Three Valleys Steam Train

Chaussée de Givet 51 - 5660 Mariembourg - Treignes

Three Valleys Steam Train

  • Railway station at 800 m
  • Car park
  • Coach car park
    20 parking spots
  • Dogs admitted
  • Maestro
  • Visa/MasterCard
  • Bicycle friendly


  • CGT
  • Passeport
Come and see the "Chemin de Fer à Vapeur des 3 Vallées," one of the nicest Museum lines in Europe. 

Go back in time on board a real steam train and travel through the "Three Valleys" with their amazing landscapes. Leaving from Mariembourg the train goes to Nismes, Olloy/Viroin and Vierves, before reaching Treignes, the terminus of our journey and also the last station before the French frontier.

Bikes and Wheelchairs can be carried.
Come and see our Bar/Dining car.
On reservation we can organise special celebration meals throughout the year.

2019 Special Days:

February 8, 9 10: Valentine's Day Steam Train (subject to prior booking).
April 21 22: Easter's Steam Train.
June 8: Barbecue Restaurant Car (subject to prior booking).
July 7: Treignes, the museums' village.
July 20: all kinds of machinery and tools.
July 21: Model Train Day.
August 15: Arts Crafts Market.
September 7: Regional Produce Restaurant Car (subject to prior booking).
September 21 22: STEAM TRAIN FESTIVAL.
October 26 27: Halloween Steam Train.
December 14 15: Father Christmas Steam Train.
Practical information

Practical information

Information for individuals

  • Opening times
    From 06/04 to 01/11: weekends and bank holidays (railcar or steam train according to schedule) • July and August: every day (except Mondays and certain Fridays).
    Steam trains on Thursdays, Saturdays and Sundays. Also on Tuesdays from July 15th.
    Departures from Mariembourg at 11.10, 14.20 and 17.00 (or 17.30). See our leaflet for detailed timetables and prices • Read more at
  • Price
    Return trip: adults €13 - children (6-12) €8
  • Tour length

    Length: 40 mins. in Steam Train (or 30 mins. in Railcar)

Information for groups

  • Opening times
    • Saturday 10:00 - 18:00
    • Sunday 10:00 - 18:00
  • Price
    Return trip: adults €11.50 - children (6-12) €7 • Combined Museum tour and Steam Train ride: adults / 60+ €16 - children (6-12) €10
  • Information
    • Special train rides available for schools, seniors, etc. all year round subject to prior booking (Tel.: 060/31.24.40)
Read more


  • A5 Charleroi-Couvin • By train: Line 132 Charleroi-Couvin • In Mariembourg: Departure from Locomotive Depot


  • 2019
    Steam Festival - Locomotive festival in Mariembourg
    Steam Festival - Locomotive festival in Mariembourg

    Get up close to various steam locomotives and ancient train carriages present for this festival. Go back to your childhood in Mariembourg from 27 to 28/09/14!

    2014 is a special year, and the theme is: "1914...The Great War...100 years later".

    There'll be around 10 steam locomotives and trains will circulate non-stop between Mariembourg and Treignes!

    From 10am to 8pm. (Departures are guaranteed every 55 minutes).

    The Three Valleys Steam Railway will offer related activities and food. This event is held in a region which is perfect for walks.

    Exhibition and sale of miniatures, books and souvenirs...

    And, various types of snacks available.

    Join the Festival Vapeur community on Facebook!

  • 2019
    Special "Halloween" Train... The Horror Train!
    Special "Halloween" Train... The Horror Train!

    Special Halloween train from Mariembourg to Treignes, with surprise decorations and entertainment. In Mariembourg on 29 and 30 October 2016.
    Every year, the 3 valleys steam railway is organising its Halloween train! Will you dare take your seat next to a real witch or pay a visit to Adolphe the skeleton?
    Everyone is welcome, and fear not, the whole event takes place in a family-friendly atmosphere.

    In practice

    Reservation required (limited capacity: 800 persons).

  • 2020
    Train de Pâques au Chemin de fer à vapeur des 3 vallées
    Train de Pâques au Chemin de fer à vapeur des 3 vallées

    Embarquez à bord du train à vapeur des 3 vallées pour une chasse aux oeufs dont vos enfants se souviendront ! Une excursion à faire en famille, à Pâques, en avril 2020.

    Un voyage authentique

    Fêtez Pâques en famille à bord du mythique train à vapeur du Chemin de fer des 3 vallées. Embarquez dans la vieille locomotive et laissez-vous charmer par les magnifiques paysages. Pour les enfants, ce sera sans nul doute une chasse aux oeufs inoubliable !

    En pratique

    Voyage en train vapeur (aller-retour + visite du musée et accès à la chasse aux oeufs) : 17 €/adulte et 11 €/enfant (6 à 12 ans). Gratuit en dessous de 6 ans. 

    • 14h20 : Départ du train de Pâques
    • 15h00 : Chasse aux oeufs à Treignes et visite du musée
    • 16h20 : Retour en train vapeur
    • 17h00 : Arrivée à Mariembourg

    Une chouette escapade pour les petits et les grands !