A Parc-aux-Cerfs (literally, stag park), in France, was the name given to the clearings that provided hunting fields for the French aristocracy prior to the French Revolution.
The Parc-aux-Cerfs was an area in the grounds of the Palace of Versailles used as the name for a mansion there, where young mistresses of Louis XV were accommodated, being taken from there to the palace to visit the king. The arrangement was supposedly supervised by his main mistress, Madame de Pompadour, who remained close to the king, but no longer did the physical work.
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Parc-aux-Cerfs Wikipedia(Text) CC BY-SA