"The ir. D.F. Woudagemaal (ir. Wouda pumping station) in the Netherlands, is the biggest currently running steam-powered pumping station in the world. On October 7, 1920 Queen Wilhelmina opened the pumping station that is used to pump out redundant water from Friesland.
In 1967, after 47 years running on coal, the boilers were rebuilt to run on oil. Since 1998 the ir. D.F. Woudagemaal has been listed on the UNESCO World Heritage Site list." - in: wikipedia