The vestibule is paneled in marble and lighted by two windows that opened onto the cour royale. In 1701, in order to provide more light to the staircase, the south wall opposite the windows was opened, thus creating a loggia from the vestibule.
Reference : Félibien, André (1694). La description du château de Versailles, de ses peintures, et des autres ouvrags fait pour le roy. Paris: Antoine Vilette.
On this day in history, May 6th, in 1682, Louis XIV officially moved the French Court from Paris and into the Chateau de Versailles. It would remain the seat of power for the French monarchy for over 100 years, until the outbreak of the French Revolution when Louis XVI and his family were forced to return to Paris by the revolutionaries.