78000 Versailles, France
Where Marie Antoinette had Slumber PartiesVersailles is known for its gilded halls, mirrors, chandeliers, endless tapestries etc. But the real eyebrow-raiser is out the back door to the grounds. The pools and greenery go on for so far you literally can't see the end of them.
As you wander gravel paths through woods and hedge, pondering what legion of gardeners would have been required to maintain such a thing, you eventually stumble upon...the Queen's summer home. On the grounds of her own mansion. Decidedly less royal, it's where she would come with her gal pals to Get Away From It All.
A few steps further and you can hang over a fence to watch some docile sheep and funky-horned goats graze--allowing you to feel you're in the French countryside, even if your trip doesn't take you much further out of Paris than this.