My favorite space in Versailles was the Chapel. Completed by the architect Jules Hardouin-Mansart in 1710 under king Louis XIV, this was the last of 5 chapels built.
As the chapel was built later than much of the palace, it is bordering on the Neoclassical design that was becoming popular in the 18th century. It proved to not be popular with many of the courtiers of the time because it towered over the very horizontal lines of Versailles as you see above.
If you take the tour of private Versailles, this will be your final stop. Other visitors only get to admire the chapel from the doorway. 
The balcony above the door was where the highest royals and the King would attend services.
The ceiling mural was recently restored and is truly breathtaking (and not just because you're staring straight above you!).
The stonework was left ungilded as France was beginning to experience financial problems. If this is cheap construction, sign me up: Still totally amazing! 
If you've seen the movie 'Marie Antoinette' (one of my favorites), you're familiar with the space and how large it is! Left empty; it almost feels intimate without items for scale.
If lucky, you'll catch one of the concerts held weekly as the space has excellent acoustics!
If you've seen the movie 'Marie Antoinette' (one of my favorites), you're familiar with the space and how large it is! Left empty; it almost feels intimate without items for scale.
If lucky, you'll catch one of the concerts held weekly as the space has excellent acoustics!