Ursus' Keep Out!

This is a very dark and sombre (while also very cool) design by Ursus. He originally planned to make a cathedral but ended up with a keep. Frankly, I would very well see Vlad the Impaler come strolling out of that tower at nightfall.

His design also provides come kind of a roof even though those areas are inhabitable. It's more of an attic. but you can still wak on top of the roof.