Nineteen windmills at Kinderdijk ("Children's Dike") comprise a Unesco World Heritage Site. The Netherlands would have returned to the sea without the invention of windmills to pump water from the developed areas, up to the rivers and on to the sea. These days, steam and diesel machines do the work, but the windmills remain.
I return late today. New photos from Hartford should begin on Tuesday, though I will no doubt sprinkle in occasional photos from the trip.