The Petit Trianon was built between 1763 and 1768 by the architect Gabriel, requested by Madame de Pompadour, mistress then friend of king Louis XV.
It is not as simple as it looks like : each frontage is different, built to reply to its surrounding : the Courtyard, the French Garden and its lovely pavilion, the Botanical Garden and the Flower Garden.
Even inside we find a modern style. The decoration of the Small Trianon is more simple than the rest of the estate. It is not about materials, you will notice the absence of gold for example, but more about the fineness and elegance of the sculptures dedicate, like the palace, to nature.
Sadly, Mme de Pompadour died before the completion of the Palace in 1764. Nowadays it keeps the souvenir of an other inhabitant : Louis XVI made a gift of the Trianon Estate to his queen Marie-Antoinette in 1774. She lived there a distant life from the court, maybe too distant for some of the courtier.