This year marks the 100th anniversary of an event that changed Paris—and fine art—forever. At the 1925 Exposition internationale des arts décoratifs et industriels modernes, Josef Hoffmann, Robert Mallet-Stevens, and Jean and Joël Martel unveiled works bold and glamorous: sculptures, paintings, and furniture that shared a sleek geometry and symmetry. The show signaled the advent of Art Deco. “The art of 1900 was the art of the realm of fantasy,” painter Charles Dufresne observed. “That of 1925 is the art of reason.” This exhibition celebrates the centennial by showcasing works from the period and placing them in the context of Long Island’s Roaring Twenties. A century later, how far have we departed from the age of reason? —Elena Clavarino