The Prosperity mill is an historic corn mill situated just a short distance from the De Hoop mill on Molenweg, in the town of Horn. The mill was built in 1865, and was in use until the early 20th century. During the Second World War, German forces planted a number of explosives in the mill. The German soldiers were forced to retreat by some British forces, so the explosives were never detonated. The Prosperity mill is in good condition, and is open to the public.