The Windmills of Schiedam are the tallest windmills in the world. Originally, there were twenty windmills at Schiedam. From these only five survived until today. However, in 2006 a sixth was built, which is however a wind turbine looking like a windmill. A 7th was rebuilt in 2011.
References
List of windmills in Schiedam Wikipedia(Text) CC BY-SA