Headquarters for world's largest equine registry, more than 2.6 million horses registered in 53 countries. Quarter Horse was the first American horse breed; still is favorite mount of cowboys. Showcases history and activities of breed with exhibits, videos, hands-on displays, and gift store. Open daily May - Aug. 9 a.m. - 6 p.m.; Sept. - Apr. Mon. - Sat. 10 a.m. - 5 p.m., Sun. noon - 5 p.m. I-40 at Nelson St. exit.