this concept was created by , somea state university architecture students came up with this idea. over 30 years we figured out how to find it, what it takes to support the annual maintenance , so for about $100 million we got $1.5 billion back, plus all these beautiful places to live and work and hundreds of new businesses being generated because they want to be here. >> what do you want to see for your city next? it sounds like this happen pretty rapidly. what is your ideal scenario for your city? >> but i really think tempe wants is to make the world a better place. but we have a lot of young people and the goal of the city is to help its residents achieve it streams. that is the goal of any city. we want our residents spent to do whatever it is they want to do. want to cure disease or open a popsicle stand, that is rate. whatever they want, that is what we want for our city. featuringekend, where the history of tempe arizona. learn more about tempe and other stops on our cities tour at www.c-span.org. you're watching american history tv, all weekend, every weekend, on c-span3.