Fizzdrake Castle is an imposing and indeed dreary gray building (on sale for L$14K if I remember rightly), but the gray is relieved in spots by wonderful wall hangings and stained glass.
It's a fascinating place, and this photo of course doesn't show the half of it, by far. Do check it out.
P.S. Oh, my... look at me, without a hat. What a shameless hussy I am!