Tucson, Arizona's second city, home of the University of Arizona. I-10, I-19, and the Union Pacific Railroad follow their actual routes (the 10-19 interchange is left to your own devices). The Santa Cruz River flows as it once did, but beware - using more than one water pump will dry it up! Fortunately water towers can magically conjure water, so you won't have to deal with pesky water shortages. (The oil, ore and forestry resources are unrealistic.)