1. Art Basel Announces Gallery Participants for Inaugural Paris+ Fair Art Basel has announced the galleries that will participate in its inaugural Paris+ fair, which will take place in Paris at the Grand Palais Éphémère from October 20 to October 23, with a preview day on October 19. The fair will feature 156 galleries, including the world's four largest galleries: Gagosian, Hauser & Wirth, Pace..