The Knipmolen is an historic polder mill located on Vliet en Wegen in the town of Voorschoten. The mill was built in the 18th century, and served the Knippolder until 1948. The Knipmolen was bought by the town of Voorschoten in 1958, and was restored in 1970. Since then the mill has been ran on a voluntary basis. The Knipmolen is open to the public, and tours of the mill are available upon request.