What used to be Hôtel Marcel Dassault, is now the headquarters of Artcurial, an auction house (like Sotheby's and Christie's) that specializes in modern and contemporary art, vintage photographs, antique books and posters, and sculpture. Artcurial also presents special exhibits periodically and during 8 - 21 September, AD Interieurs 2012 (Architectural Digest, France) took place. This was the third edition hosted by Artcurial, with the support of Louis Vuitton, and the theme was "voyages imaginaires" (Imaginary Travels).
Within two floors of this building, thirteen contemporary designers were given carte blanche to design rooms; the results were dramatic and edgy, similar to Haute Couture fashion shows except for interior architecture and design.
I love the graphic nature, materiality and high contrast of Joseph Dirand's Maharajah bathroom for Louis Vuitton:
To see more, check out this link from Vogue Paris: http://en.vogue.fr/fashion-culture/fashion-exhibitions/diaporama/the-ad-interieurs-2012-show/9634