The Millener Mill is a 19th century water-driven mill in the village of Millen. The mill was built in 1849 and had two water wheels, and at the time of its construction one half of the mill was on Dutch territory, and the other half on German territory. The Dutch part of the mill was used to grind corn, while the German side was used as an oil mill. Today, one half of the mill has been converted into a hydro-electric plant.