Windmills at Kinderdijk
These are nineteen windmills at Kinderdijk. Citizens built them from 1738 to 1740. The purpose of the windmills was to maintain the water level in the polders near the Lek and Noord rivers. The United Nations Educational, Scientific, and Cultural Organization (UNESCO) inscribed the area as a World Heritage Site in 1997. The country’s windmills were listed as national monuments in 1993 and are protected.