National Museum of the American IndianA diverse and multifaceted cultural and educational enterprise, the National Museum of the American Indian (NMAI) is an active and visible component of the Smithsonian Institution, the world's largest museum complex. The NMAI cares for one of the world's most expansive collections of Native artifacts, including objects, photographs, archives, and media covering the entire Western Hemisphere, from the Arctic Circle to Tierra del Fuego.