 The style was used particularly in salons, a new style of room designed to impress and entertain guests.The most prominent example was the salon of the Princess in Hôtel de Soubise in Paris, designed by Germain Boffrand and Charles-Joseph Natoire (1735–40).The characteristics of French Rococo included exceptional artistry, especially in the complex frames made for mirrors and paintings, which sculpted in plaster and often gilded; sinuous curves and counter-cures, and the use of vegetal forms (vines, leaves, flowers) intertwined in complex designs.