Over the weekend, the nation got a new contemporary art museum: The Momentary in Bentonville, Arkansas. Situated in a repurposed Kraft cheese factory, the new space is the latest outpost of the nearby Crystal Bridges Museum of American Art. The Momentary's industrial-strength embrace of emerging art is intended to augment that nine-year-old institution's focus on art-historical classics, which has made an unexpected cultural tourism destination of Bentonville, previously best known as the home of Walmart (heiress Alice Walton is the prime mover behind Crystal Bridges).