Rafters for small dome - bottom view
The last building on the west wing is going to be a small observatory. And as You may figure it out a small observatory needs a small dome :) 22 studs in diameter to be exact. After working on the big dome (32 studs in diameter for the underlying structure) I was very sceptical whether I would able to at least connect all the 16 rafters for it... but it turned out it was possible to shrink it. Now it needs panels with a hole for the telescope!
By the way, the bottom part is bigger than the dome because it will eventually be used to support wooden terrace around this whole thing.