If possible, arrange a visit to Ringsted Windmill when the wind is up. You may see this structure working in full swing!
You'll be spoiled for sightseeing choice when visiting Ringsted. Ringsted Windmill is a great place to kick off here, but there are plenty of other worthwhile attractions to explore. Mosehuset, Ringsted Outlet, and Gyrstinge Kirke are near the wind-driven milling structure and will fill in your day nicely.