Petit Trianon: Queen's Boudoir

Originally this room was the beginning of Louis XV's private chambers and he would retreat to this room when he wanted to be alone or with his mistress.
When Marie Antoinette took over the Petit Trianon she wanted to add something very special to her boudoir. She asked Jean-Tobie Mercklein to create two movable mirrors that could be pulled up from the floor and cover the windows - in this way she would achieve complete privacy. Just two years before the royal family was forced to leave Versailles, Marie Antoinette commissioned new panels that would be created by the Rousseau brothers.

Notice the mirror right below the window - it can be pulled up to
cover the window

This is how the moving mirrors can be raised into the Queen's boudoir