Parc de Bagatelle

The Château de Bagatelle is a small neoclassical château with several small formal French gardens, a rose garden, and an orangerie. It is set on 59 acres of gardens in French landscape style in the Bois de Boulogne, which is located in the 16th arrondissement of Paris.

There is also a Chateau de Bagatelle () located near Abbeville in northern France.

The château is a glorified playground, actually a maison de plaisance intended for brief stays while hunting in the Bois in a party atmosphere. The French word bagatelle, from the Italian word bagattella, means a trifle or little decorative nothing. Initially, a small hunting lodge was built on the site for the Maréchal d'Estrées in 1720.

In 1775, the Comte d'Artois, Louis XVI's brother, purchased the property from the Prince de Chimay. The Comte soon had the existing house torn down, with plans to rebuild. Famously, Marie-Antoinette wagered against the Comte, her brother-in-law, that the new château could not be completed within three months. The Comte engaged the neoclassical architect François-Joseph Bélanger to design the building that remains in the park today.

The Comte won his bet, completing the house, the only residence ever designed and built expressly for him, in sixty-three days, from September 1777. It is estimated that the project, which came to include manicured gardens, employed eight hundred workers and cost over three million livres. Bélanger's brother-in-law, Jean-Démosthène Dugourc, provided much of the decorative detail.

...
Wikipedia