Where should I take the wife for a romantic weekend?

I am trying to put alittle weekend getaway together for my wife and I's 3 year anniversary and would like alittle input on where to go. I have a few places in mind, but cant decide. We live just north of Atlanta and dont want to drive more than 4 hours or so. I was thinking we can always just stay local in atlanta, but would like to do something different. We can go to the smokey mountains, but again done it a million times. I also thought of the biltmore estate, but I figured that would cost an easy $1000 and thats more than I want to spend for the weekend. The only place that I can think of that neither of us has been is Nashville. I thought this would be great b/c my wife loves country music and is a southern girl, but I would like some input on the city and what there is to do in Nashville or If you can think of another city that I have not mentioned please let me know. I need some ideas! I always try to plan something, but have had so much going on lately. Any suggestions will be greatly appreciated.