For my current set of tips, I'm using the list " 101 Small Ways You Can Improve Your City . 14. Look underground. "So much of what happens at the city surface is impacted by what happens underground. From sewer systems to bedrock geology to culverts, what happens below the urban crust can highlight the history of a place, revealing why and how a city develops. In Lexington, SCAPE recently went subterranean, tracing the historic buried stream channel of Town Branch, and creating a podcast tour that describes this forgotten waterway and how it shapes the city's past and future." — Kate Orff, landscape architect, principal at SCAPE, author of Toward An Urban Ecology , New York City