Trusty water-shifters

This stretch of windmills is one of the best-known Dutch tourist sites—you probably recognize them from postcards and calendars. Both iconic and historic, the windmills in the village of Kinderdijk have been a UNESCO World Heritage Site since 1997. The Netherlands has about 1,200 windmills, though only 300 or so are still operational. Over the years they’ve played a major role in pumping sea water away from the nation's reclaimed land. Keeping the water at bay is a perennial issue for the flat 'low countries,' where much of the ground is below sea level.
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