Downtown America was once the vibrant urban center romanticized in the Petula Clark song--a place where the lights were brighter, where people went to spend their money and forget their worries. But in the second half of the twentieth century, "downtown" became a shadow of its former self, succumbing to economic competition and commercial decline. And the death of Main Streets across the country came to be seen as sadly inexorable, like the passing of an aged loved one.

Downtown America cuts beneath the archetypal story of downtown's rise and fall and offers a dynamic new story of...