The Borgmolen is a historic polder mill located on Burd in the town of Grou. The mill was built in the late 19th century by the Nije Borgkrite water board. The mill was in active use until 1952, when the waterboard installed an electric pump to take over husbandry of the polder. The mill is now owned by the Boarnsterhim County, and is in a very poor condition. The sails of the mill have been removed for safety reasons, and the mill is awaiting restoration.