The city library, county museum and soda fountain, the K-State Research and Extension office, and a media center with an internet-based TV and radio station all share space inside this 20,000-square-foot building. On the roof top a closed-loop geothermal system and thin-film solar panels provide the power. Whenever the building is open, you're welcome to come inside, take the stairs to the top, and exit outside for a closer look at this example of green infrastructure.