Stories of cities and the changes they endure over time always have something to teach us. Our guests this week are at the forefront of change in two American cities in two great neighborhoods.

Bob Eury has for 23 years served as president of Central Houston, leading the redevelopment of the city's downtown. This week he'll share the changes taking place there and tell us about a major new park about to open downtown, Discovery Green.

Sean Thomas is guiding the transition of Old North St. Louis, an urban village just 10 minutes from downtown St. Louis. It's conversion from a dying neighborhood with a decaying pedestrian mall at its center to a vibrant community is a story he'll share this week on Smart City.