Log buildings I have known.
You would think that if you were to construct such a structure in a wood or field you would at least take the easy course of action and build something on one level, but no, three floors - I really admire that.
Well, on the lower picture, the cabin with three floors, it was originally what would have been called a story and a half. The 'second' story had beams that would hit me middle of the forehead. I removed some of those to open half of the 'second' story to full height, and added a loft over half the second story making floor number three.In the top picture, there was no second story, but I increased the pitch of the roof and made a second story.