name some cities?
Phoenix, Glendale, Peoria
Arizona
Phoenix, in Maricopa County, is Arizona's capital and largest city. Other prominent cities in the Phoenix metro area include Mesa (Arizona's third largest city), Chandler (Arizona's fourth largest city), Glendale, Peoria, Buckeye, Sun City, Sun City West, Fountain Hills, Surprise, Gilbert, El Mirage, Avondale, Tempe, Tolleson and Scottsdale, with a total metropolitan population of just over 4.7 million. 
which places do u.s. route 80 in arizona connect? From the California border in Yuma to the New Mexico state line near Lordsburg. when was it started? November 11, 1926 was any tunnel constructed here? Yes, the construction of the Mule Pass Tunnel can you give a very brief description of this route? Within the state of Arizona, US 80 made two indirect loops to both Phoenix and Douglas, and the odd shape created by the two "loops" gave US 80 a long length through the state of Arizona. why was the tunnel constructed, any idea? The older route of US 80 over Mule Pass provided a dangerous obstacle for vehicles heading into Bisbee. which places serve as the tourist attractions here? UNANSWERABLE the above state that you mentioned, is it prone to earthquakes? Yes, but  Arizona is at low risk of earthquakes, except for the southwestern portion which is at moderate risk due to its proximity to southern California.
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Arizona [SEP] Cities and towns
Located in Pima County, approximately southeast of Phoenix, it was incorporated in 1877, making it the oldest incorporated city in Arizona. It is home to the University of Arizona. Major incorporated suburbs of Tucson include Oro Valley and Marana northwest of the city, Sahuarita south of the city, and South Tucson in an enclave south of downtown. It has an average July temperature of 100 °F (38 °C) and winter temperatures averaging 65 °F (18 °C). Saguaro National Park, just west of the city in the Tucson Mountains, is the site of the world's largest collection of Saguaro cacti. The Prescott metropolitan area includes the cities of Prescott, Cottonwood, Camp Verde and many other towns in the of Yavapai County area.