The Wouda Pumping Station at Lemmer in the province of Friesland opened in 1920. It is the largest steam-pumping station ever built and is still in operation. It represents the high point of the contribution made by Netherlands engineers and architects in protecting their people and land against the natural forces of water - it is a steam-driven installation to prevent flooding of the low-lying areas of Friesland.
The biggest of its kind! Thank you Amy, and the wintery stamp is one of my Dutch favourites :)