The Grevensmolen is a 19th century polder mill located on Deelswal in the town of Vegelinsoord. The mill was built in 1860, and was used to serve the Haskerveenpolder until the early 1950s. In 1959, the Grevensmolen was bought by the town, and restoration work was began. By the early 1990s, the mill had been restored to working order, and put into use as part of a circuit drainage system. The Grevensmolen is open to the public.