Motor Mill Historic District, Historic mill complex in Clayton County, Iowa, United States
Motor Mill Historic District is a mill complex with a six-story limestone building rising about 90 feet along the Turkey River southeast of Elkader. The site includes multiple historic structures that make up the working milling operation.
The complex was founded in 1869 and operated as an active mill until a major flood in 1883 caused substantial damage. After this destruction, the mill was not rebuilt and the buildings remained as remnants of that era.
The mill's stone walls display the different craftsmanship of German stonemasons from Communia, with each mason's distinctive cutting and fitting techniques visible across the structure. These variations in stonework remain visible to visitors walking around the complex.
The site is maintained as a public park by the Clayton County Conservation Board with paddling opportunities and guided tours available through the historic buildings. Visitors should prepare for uneven ground and wear appropriate footwear.
Stone for construction was transported from nearby bluffs using cable cars running on wooden rails, an engineering achievement of the 1800s. This clever system allowed workers to move heavy materials uphill.
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