These many old windmills played a vital part in Belgium’s development over the centuries. Their natural, endless power was harnessed to grind grains, which were produced plentifully in this region. Just as importantly, they were used to pump water out of these wetlands and into the network of canals that protects the region from flooding. Belgium's resourceful man-made topography was created in large part by these wind-powered water pumps.
Many of these windmills are visible over the flat terrain for miles in all directions. During World War I, the occupying Germans forbade the mills from working, to prevent them from sending signals to the opposing forces.