What are dream houses?

Ones that disobey the natural laws in some fashion. Infinite rooms. Alive. Full of ghosts.
Follies. Ones that disobey common sense. Spiral stairs that wind up and up and up. Stairs without railings. Rooms with dangers. Creatures of any kind. Pitfalls.
Labyrinths.
Trapdoors. Secret passages. Secret rooms.
Beautiful.