Nashville is probably best known as being the center of the Country & Western music universe. It is home to the Country Music Hall of Fame and the Grand Ole Opry (a weekly country music concert held since 1925) and has a ratio of cowboy boots to regular footwear that I have not seen outside of Texas.
Nashville has its own conrtibution to the culinary canon with "hot chicken", which you can learn about here:
Downtown Nashville and surrounding neighborhoods are reasonably easy to travel around without a car. In fact my mode of transport was this:
I did get a few odd looks going through the drive-through ATM but otherwise I was fine.