Glaces Mouvantes

Marie-Antoinette's Boudoir in the Petit Trianon
Louis XV’s original private staircase and coffee room opened onto the outside steps on one side and directly overlooked the garden on the other.

To ensure Marie-Antoinette’s privacy in her new boudoir, a unique solution was provided by the court’s mechanic from the royal “garde meuble”.  He installed an innovative system using mirrors to cover the windows from inside.  The mirrors could be raised or lowered on a system of pulleys and springs.

Glaces Mouvantes
The boudoir with both mirrors all the way down
Glaces Mouvantes
The boudoir with one mirror up and the other half way down

 

 

 

 

 

 

The ground floor with one of the mirrors half way down. On the wall on the left you can see where Louis XV’s staircase was.
Marie-Antoinette had a library directly above the boudoir. The superstructure of the mechanism is concealed in the section under each window, made to look like a stool