Tucson is Arizona's second largest city and is the hub of activity and commerce for southern Arizona. It is a clean, modern and attractive city. The metro area has a population of nearly 800,000 and is home to the University of Arizona. Near town is renowned Saguaro National Park featuring that wonderful desert icon, the saguaro cactus. Tucson is located in a valley at the base of 4 different mountain ranges. Just northeast of Tucson, the Santa Catalina Mountains rise to over 9,000 feet. They are home to the southernmost ski resort in the United States.