Located in Southeastern Phoenix, AZ, Saguaro National Park encompasses 92,000 acres divided into two units known as districts. The two districts are bisected by Tucson and are located about 30 miles away from each other. Saguaro National Park is approximately 30 minute's drive from Sahuarita. Rincon Mountain District covers 67,000 acres while Tucson Mountain District covers 25,000 acres. Although Saguaro National Parks preserve over 25 types of cactus, it is most renowned for its towering saguaro cactus from which it derives its name. Nestled within the Sonoran Desert saguaro cactus are unique to this region. Initially, the park was established as a national monument in 1933 and was later designated as a national park in 1994. Besides the cactus, Saguaro National Park has plenty of petroglyphs spread in the Signal Hill Petroglyph Area.