A major suburb of Phoenix, Mesa is Arizona’s third-largest city and the 35th largest city in the US with more than 508,000 residents. The city stretches across more than 138 square miles and is home to ASU’s Polytechnic campus, two spring training facilities for the Chicago Cubs and Oakland A’s, and several highly rated golf courses. Mesa is also home to Phoenix-Mesa Gateway Airport, a reliever airport for nearby Phoenix Sky Harbor International. Cultural hotspots include the Mesa Arts Center, the largest arts and entertainment park in the Southwest, the Arizona Museum of Natural History and the i.d.e.a. museum.