Biggin House - The most complicated dolls house in the world!
The house itself is a Corian model of Biggin House, in North Herts. Inside is a Pepper’s Ghost illusion, which comprises of an angled piece of special glass with holographic projection film, and a screen above.
Behind that is a drum which rotates, and is split into four sections. Each section is a different room set, which represents a different period in history.
When the lever is pulled, a scene is played out, and each time the lever is pulled after that causes the drum to spin round and play the next scene.