What notable art feature connects the Salons of War and Peace?

The notable art feature that connects the Salons of War and Peace is the presence of 17 large arched mirrors. This design element serves a dual purpose in the visual and spatial experience of the salons. The mirrors not only enhance the aesthetic appeal of the rooms by reflecting light and creating an illusion of more space, but they also symbolize the grandeur and wealth associated with the period. In the context of these salons, the mirrors contribute to the opulent, monumental character intended by the designer, reflecting the themes of power and prestige integral to the message of the artworks displayed within these spaces. This striking feature is thus crucial in understanding the architectural and artistic intentions behind the Salons of War and Peace.