Tucson, AZ

Tucson sprawls across Arizona's Sonoran Desert, framed by four mountain ranges and connected by I-10 running east-west through the city. The main north-south route is I-19 toward the Mexican border, while surface streets like Speedway and Oracle Road handle local traffic. Summer temperatures regularly exceed 100°F, but winters stay mild for year-round outdoor activities. Davis-Monthan Air Force Base stores thousands of retired military aircraft in the desert's naturally preserving climate.