Kinderdijk is a village in the Netherlands, belonging to the municipality of Molenwaard, in the province South Holland, about 15 km east of Rotterdam. Kinderdijk is situated in a polder in the Alblasserwaard at the confluence of the Lek and Noord rivers. To drain the polder, a system of 19 windmills was built around 1740. This group of mills is the largest concentration of old windmills in the Net