The 24-hour Museum, a collaboration between AMO, Prada and artist Francesco Vezzoli, opens in Paris on Tuesday night at the Palais d'Iéna, a modernist pavilion built by Auguste Perret in 1937. The one-off event - including an opening night party, public and press tours, and visits by schoolchildren - will be a staging of a "fake" museum, examining the modes in which art is presented and consumed, and the role of the museum as a social condensor.