Tucson is a city in Arizona’s Sonoran Desert surrounded by multiple mountain ranges, including the Santa Catalinas. Reflecting its 19th-century beginnings are the restored mansions of its El Presidio Historic District and the adobe row houses of Barrio Historico. Home to the University of Arizona, Tuscon has many student-friendly vintage shops, nightclubs and restaurants on Fourth Avenue near the campus. The 2010 United States Census put the population at 510,116. Tucson has several large festivals which take place during the summer months. The city has more than 110 parks, including Reid Park Zoo. There are five public golf courses located in Tucson.