Travel with ICP friends and colleagues with a Rotterdam Water Taxi to the World Heritage Site Kinderdijk. Kinderdijk is a village in the the Netherlands' South Holland province, known for its iconic 18th-century windmills. Its water-management network features 19 mills and 3 pumping stations, plus dikes and reservoirs that control flooding in the polder (low-lying land). Waterways, footpaths and bike trails crisscross the area, leading to the main visitors center and museums in preserved working windmills.