Kinderdijk windmills, Netherlands. Taken by Wikimedia Commons user Lucas Hirschegger.

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Kinderdijk is a village in the Netherlands about 15 km east of Rotterdam, of the Nieuw-Lekkerland municipality, in the province South Holland. Because of its position at the at the confluence of the Lek and Noord rivers, windmills were built to help drain the polder. If you want to see that quintessential Dutch tourist attraction, check out Kinderdijk, as it is the largest concentration of windmills in all of Holland. Since 1997 it has been a UNESCO World Heritage Site.