The oldest mill is a water mill that dates back to the eighth century.
These techniques were used to reclaim hundreds of lakes and swamps and avoid flooding of land.
Today, windmills are a feature of the Dutch landscape and a symbol of the fight against water.
There are over a thousand windmills in Holland; some are still used for soil drainage.
The few mills still in operation are about to lose their energy: the buildings around are getting higher and higher, so the blades of the mills can no longer capture as much wind as in the past.