QUEEN MARY'S DOLLHOUSE - Windsor Castle, UK "Queen Mary's Dollhouse" was made by hundreds of craftsmen, and is located at Windsor Castle.  Everything is 1/12 scale, and fully functional.  From the lights and running water, to the grand piano, to the vacuum cleaner and early model automobiles!  There is wine in the little bottles, and famous artists and authors of the day hand created the little paintings and books!  There's even a pea grown microscopically small, under the mattress in the princess' bedroom!  It is said that only two things had to be simulated, due to limitations in the laws of physics!