Make your windmill plan very easily with Archiplain!
The first step is to draw the windmill walls to create rooms. You can create all kinds of windmill you want, with floors or not. You can name and choose a color for each part of your windmill.
Then place the openings of the various rooms. You can choose the direction of opening and add components. There is a catalog of windows and doors available with left or right doors and sliding.
When landscaping your windmill is done, you can place the furniture in the rooms.