The Pays de Waes is a preserved tank locomotive built in 1844, which is part of the historical collection of the National Railway Company of Belgium (SNCB), on display at Train World.

Built in his private workshops, the locomotive was put into service on a narrow gauge line (Anvers-Saint-Nicolas-Lokeren-Gand) that was operated by the Compagnie du chemin de fer d'Anvers à Gand par Saint-Nicolas et Lokeren (a private company) in 1845,[2] a narrow gauge line ( 1,151 mm (3 ft 9+5⁄16 in) vs 1,435 mm / 4 ft 8+1⁄2 in).

The "Pays de Waes" was still intact in 1896 when the Belgian State took over operation of the rail line and converted it to standard gauge.

[6] The preserved locomotive was exhibited at the 1913 World Fair in Ghent and then in England in 1925 to mark the centenary of the railways held in Darlington.

[6] The locomotive is named after Waasland (Pays de Waes in French), where it commonly ran between 1844/1845 and 1896.