McCracken County, Kentucky is built around the Tennessee Valley Ridge and a Watershed system that drains into Major Rivers:
The capital city, Paducah is located only 40 miles from the Ohio's confluence with the Mississippi at Cairo, Illinois.
The county is the site of a peculiar and precarious built environment, but an interesting and promising natural environment. A set of academic studies of the area are in progress. These studies are being documented here and here.