In the Netherlands you will find many places with several windmills in a small area.
Mostly those are all industrial mills or all water-moving mills.
I know there are some small water-moving windmills in the Zaanse Schans, but those are of kinds you can not visit inside.
Does anybody know of both kinds of windmill near each other, near being walking distance, say about a kilometer or 2/3 mile apart.
By preference in the Netherlands, elsewhere might be of interest as well.
And of course open to the public at least part of the time.