Railcars type X 3800 have the cabin for the engineer above the roof.
The railcars are owned and operated by the tourist train Valley de l'Aa. The 0-6-0 was built by Henschel (Germany), the 0-4-0 in 1893 by St.-Léonard in Liège (Belgium)
All railcars are owned and operated by the tourist train of the Aa Valley.