Mystery Castle at South Mountain in Phoenix, Az.
Eighteen rooms all built by hand and scraps of things one would normally throw away. The story goes that Stutz Bearcat had promised his daughter he would one day build her a castle. He left their home in Calif. and came to Arizona to fulfill his promise. The daughter only found out about it after he died and the will was read.
He used old glass refrigerator shelves for window and just all sorts of unusual things but the thing that impressed me the most was that the heavy metal bed was on a rail track so that it could be pushed near the window in the summer and near the fireplace in the winter.
The daughter lives at the castle and people can tour it. The pictures I have seen of it since the daughter has been here have included more art and etc. which in my humble opinion distracts from the actual architecture but it is most unusual.