The Slagdijkstermolen is an historic watermill located on Goadyk in the town of Stiens. The mill was built in 1864. The mill served the 1350 hectare Slagdijksterpolder until 1931, when an oil powered pump was built to take over the husbandry of the polder. The Slagdijkstermolen is now owned by the Frykse Mill Foundation. The mill was restored in 2006 htanks to a $60,000 restoration grand from the Frisian Mill Foundation.