The old mill on the Eno River in Durham, North Carolina, USA. It was in service for 160 years. Thirty years after that the building collapsed, and was then restored to full working order. It is now part of a city park, and is still used to grind wheat and corn that you can buy. (
Detailed history.)
In motion -- two exposures blended in GIMP Single exposure with flash on the interior (freezing the action -- the mill was actually running at the time), plus selective exposure adjustments in GIMP. And perspective correction; was wanting a shift lens for this one!