An as close to accurate as we can probably get to a real windmill in minecraft. The inside floors are laid out and decorated with the same features that can be found in a real windmill.

At the end of the linked video after the build timelapse, it becomes fully animated with cut away shots also showing the mechanisms inside moving.

We're planning on uploading one a week so if you like what you see and want to see more we'd be delighted for you to subscribe here or over at Youtube www.youtube.com/channel/UCxm_5qMbccias5fKvSbs8VA

Resource Pack used is Unity.
Blender was used to animate and the Timelapse was made using ReplayMod.
Built in Version 1.16.4