Saguaro National Park is a national park of the United States in southeastern Arizona. The 92,000-acre park consists of two separate areas—the Tucson Mountain District, about 10 miles west of Tucson, and the Rincon Mountain District, about 10 miles east of the city. Both districts preserve Sonoran Desert landscapes, fauna, and flora, including the …Saguaro National Park is a national park of the United States in southeastern Arizona. The 92,000-acre park consists of two separate areas—the Tucson Mountain District, about 10 miles west of Tucson, and the Rincon Mountain District, about 10 miles east of the city. Both districts preserve Sonoran Desert landscapes, fauna, and flora, including the giant saguaro cactus.