The Palace of Versailles, whose origins date back to the seventeenth century, was successively a hunting lodge, a seat of power and, from the nineteenth century, a museum. With the gardens and the Palaces of Trianon, the park of the Château de Versailles spreads over 800 hectares. The set of fountains are one of the best in the world, so wait until water is on to see these fountains in whole beaty. I also can recommend a few sites to visit: https://en.chateauversailles.fr/discover and https://artsandculture.google.com/project/versailles